OPINION OF THE COURT
LARSEN, Justice.*The matter presented to this Court is whether there was sufficient probable cause to search the automobile owned by appellant, Gloria Rodriguez, and if so, were the circumstances such that a search warrant was not needed.1
On November 15, 1985, police received information from two reliable informants that appellant and her husband would be coming into York, Pennsylvania, to sell cocaine. The police had been told that appellant and her husband could be driving any one of several vehicles, including a black Trans Am, a white Chevy, and two or three motorcycles. The informants had also told the police that when appellant and her husband came into the York area, they would distribute the cocaine very quickly. Appellant’s hus*271band, Mr. Rodriguez, was observed on the afternoon of the 15th, carrying food and drink into a house on Bergman Street, in York, PA. The police observed a tan Ford Mustang with New Jersey license plates parked half a block from the house. A check of the registration revealed that the vehicle was registered in appellant’s name. The police then contacted one of the informants who told them that the cocaine had already been delivered to the residence of one Stephen Conn that day, which residence was located at a trailer court in Jackson Township.
On November 23, 1985, police were again told by their informants that appellant and her husband were coming to York. The police sighted the aforementioned Ford Mustang that day in the City of York, but appellant and her husband were not observed.
On November 27, 1985, the informants told the police that appellant and her husband were coming into the York area. The police observed the aforementioned Ford Mustang traveling south on Interstate 83 at about noon that day, but they were unable to follow it, and they could not determine who was in the vehicle. The police surveilled various locations in York, but did not see the Mustang again until they proceeded to the Stephen Conn residence about forty-five minutes after first spotting the automobile. Forty minutes later, when appellant and her husband were seen driving away from the Conn residence, the police stopped the Mustang and conducted a preliminary search of the vehicle. Cocaine and a large amount of cash were found during the search. Appellant and her husband were then placed under arrest, and subsequent searches of the automobile and appellant uncovered more cocaine, heroin, cutting agents, a .38 caliber revolver, a notebook with drug transaction notations, and more cash.
The Court of Common Pleas of York County denied appellant’s motion to suppress the evidence seized as a result of the warrantless search of her automobile, and, following a non-jury trial, appellant was convicted of possession of drugs with intent to deliver (35 Pa.S. *272§ 780-113(30)). She was sentenced to a one to two year term of imprisonment. Appellant’s appeal to the Superior Court was dismissed for failure of counsel to file a brief. The trial court reinstated her right of appeal following a hearing on appellant’s Post Conviction Hearing Act (PCHA) petition. The Superior Court affirmed the judgment of sentence, 379 Pa.Super. 24, 549 A.2d 578 and this Court granted appellant’s petition for allowance of appeal. We now affirm the decision of the Superior Court.
This Court has stated that:
While searches and seizures conducted outside the judicial process, without prior approval by a magistrate, are generally unreasonable under the Fourth Amendment, there is an established departure from the warrant requirement for certain automobile searches based on the inherent mobility of vehicles, with the consequent practical problems in obtaining a warrant prior to infringing a legitimate expectation of privacy, and on the “diminished expectation of privacy which is accorded automobiles because of their open construction, their function, and their subjection to a myriad of state regulations.”
Commonwealth v. Milyak, 508 Pa. 2, 7-8, 493 A.2d 1346, 1349 (1985) (citations omitted).
Thus, where there is probable cause related to the vehicle or its occupants, and where the exigencies of the situation compel an immediate search of the vehicle, a warrantless search of an automobile does not offend the Fourth Amendment. Id. Appellant argues that the evidence seized as a result of the warrantless. search of her automobile should have been suppressed as the police lacked probable cause to search the vehicle and as there was sufficient opportunity for the police to obtain a search warrant before searching her automobile.
In this Commonwealth, the standard for evaluating whether probable cause exists is the “totality of the circumstances” test set forth in Illinois v. Gates, 462 U.S. 213, 103 S.Ct. 2317, 76 L.Ed.2d 527 (1983). See Common*273wealth v. Baker, 513 Pa. 23, 518 A.2d 802 (1986), Commonwealth v. Gray, 509 Pa. 476, 503 A.2d 921 (1985). The bench mark of a warrantless arrest is the existence of probable cause, namely, whether the facts and circumstances which are within the knowledge of the officer at the time of the arrest, and of which he has reasonably trustworthy information, are sufficient to warrant a man of reasonable caution in the belief that the suspect has committed or is committing a crime. Commonwealth v. Wagner, 486 Pa. 548, 406 A.2d 1026 (1979). Applying that test to the within case, the veracity and basis of knowledge of those persons supplying hearsay information must be examined to determine whether there is a “fair probability that contraband or evidence of a crime will be found in a particular place.” Commonwealth v. Baker, supra, 513 Pa. at 26, 518 A.2d at 803.
The informants who provided the police with information regarding the illegal activities of appellant were multi-drug users, one of whom had previously supplied information to the police that had led to the issuance of four search warrants, the arrest of four persons, and the confiscation of large quantities of drugs. Each time the informants told police that appellant and her husband would be traveling to York to sell drugs, the police had observed them or their vehicle in York. On the date that police conducted the search in question, the appellant and her husband were seen entering appellant’s automobile which was parked outside the residence of someone to whom appellant and her husband had sold drugs in the past, on a day specified by these reliable informants that appellant and her husband would be in York County selling drugs. Thus, under our “totality of the circumstances” test, there was probable cause for the police to search appellant’s automobile.
With regard to appellant’s claim that the police had sufficient opportunity to obtain a search warrant before conducting the search of her automobile, the police did not know until they saw appellant’s Ford Mustang on a high*274way in York County on November 27, 1985, that appellant and her husband would be traveling in York County in that particular automobile. The information that the police had received from informants indicated that appellant and her husband had used several different automobiles and motorcycles when delivering drugs in the county on prior occasions.
In addition, the police did not know exactly where in York, Pa., appellant and her husband would be going on November 27; thus, they did not know which magistrate would have jurisdiction to issue a search warrant. Pa.R. Crim.P. Rule 2001 (location of person or thing to be searched determines who is proper issuing authority). It was only because appellant and her husband fortuitously happened to be delivering drugs to the residence of a person who had been known to purchase drugs from appellant and her husband in the past that the police were able to relocate appellant’s vehicle after initially spotting and then losing sight of it on November 27.
The police also knew, on the basis of information supplied by informants, that appellant and her husband distributed cocaine “as rapidly as possible ... to get it out of their possession.” Notes of Testimony at 39 (Suppression Hearing, Feb. 25, 1986). The police stopped appellant’s automobile immediately after they had ascertained that appellant and her husband were the occupants of the vehicle, and while the vehicle was moving away from the residence of one of appellant’s known “customers.” Under these circumstances, there was no opportunity for the police to obtain a search warrant prior to searching the appellant’s automobile. In Commonwealth v. Baker, 518 Pa. 145, 149, 541 A.2d 1381, 1383 (1988), this Court held that where police do not have advance knowledge that “a particular vehicle carrying evidence of crime would be parked in a particular locale, ... the exigencies of the mobility of the vehicle and of there having been inadequate time and opportunity to obtain a warrant rendered the search [without a warrant] proper.” (emphasis added). Thus, we affirm the Superior *275Court’s holding that both probable cause and exigent circumstances existed to justify the warrantless search of appellant’s automobile.
The Superior Court did not address the issue of the sufficiency of the evidence, finding that it had been waived by the failure of appellant to raise the issue in post-trial motions. Although the issue of the sufficiency of the evidence was not raised in appellant’s post-trial motions, the issue of trial counsel’s failure to raise the sufficiency of the evidence issue was raised in appellant’s PCHA petition. Appellant, represented for the first time by new counsel, alleged in her PCHA petition that her trial counsel was ineffective for failing to raise the issue of the sufficiency of the evidence in appellant’s motion for post-trial relief.
The PCHA court did not specifically address the issue of counsel’s ineffectiveness for failure to raise the sufficiency of the evidence issue in appellant’s post-trial motions. Rather, the PCHA court simply deferred consideration of the issue underlying the ineffectiveness claim, 1. e., the sufficiency of the evidence issue, to the appellate courts, after reinstating appellant’s right to appeal on the basis of trial counsel’s ineffectiveness for failing to file a brief in the Superior Court.2 This deference is patently incorrect. See Commonwealth v. Sullivan, 472 Pa. 129, 371 A.2d 468 (1977) (post-conviction hearing court, having determined that petitioner is entitled to pursue appeal, must not rule upon merits of remaining claims for relief unless the claims were not previously ruled upon by the trial *276court). In the interest of judicial economy, however, we will decide the merits of the sufficiency claim. See Commonwealth v. Webster, 466 Pa. 314, 353 A.2d 372 (1975).
A search of the Rodriguez vehicle revealed approximately three ounces of cocaine and 77 glassine packets containing heroin. The heroin, when processed, would have a street value of about $1540. The three ounces of cocaine would have a street value of about $7200. During the search of the vehicle, the police also seized cutting agents, including: mannitol and lidocaine. Appellant had $2850 in cash on her person. Additionally, when police conducted the search of the Conn residence, the residence last visited by appellant and her husband, they discovered cocaine with an approximate street value of $2850. Cutting agents, scales, and packaging materials were also confiscated from the Conn residence. This evidence was clearly sufficient to prove that appellant possessed drugs with intent to deliver, and thus trial counsel was not ineffective for failing to raise this issue in post-trial motions.
Accordingly, the order of the Superior Court, affirming the judgment of sentence, is hereby affirmed.
FLAHERTY, J., files a dissenting opinion joined by NIX, C.J., and ZAPPALA, J.This case was reassigned to this writer on August 8, 1990.
. Appellant also argues that the evidence was insufficient to sustain her conviction of possession of drugs with intent to deliver. 35 Pa.S. § 780-113(30). This issue will be addressed infra.
. The PCHA court stated, in relevant part:
We also note that in regards to the whole question of whether the evidence is convincing overwhelmingly that this lower Court has already ruled on that issue through the suppression motion and through the decision of Judge McCullough in a nonjury trial, that this Court would not be in a position to overrule those decisions and if they are going to be overruled, that it should be the appellant [sic] courts that would overrule them, not the common pleas. We feel we do substantial justice in the case simply by restoring the appellant [sic] rights and giving the Defendant the right to pursue the suppression issue and the issue raised in this Post Conviction Appeal.
Opinion and Order of the Court at 3 (Mar. 7, 1988).