OPINION — AG — ** SUBJECT MATTER: "CAR POOLS — (MAYBE VAN POOLING)" RELATING TO CLASS `B' PERMITS FOR MOTOR CARRIERS. (SHARE EXPENSES, REGULATIONS) CITE: 47 O.S. 161 [47-161], 47 O.S. 167 [47-167], 47 O.S. 172 [47-172] (TRANSPORTATION OF EMPLOYEES, CHARGES, FEES) (JAMES P. GARRETT)