dissenting.
I dissent because I think the outcome of this case should be controlled by this Court’s earlier decision in Colonial Motor Freight Line, Inc. v. Nance, 216 Va. 552, 221 S.E.2d 132 (1976). The majority attempts to distinguish Nance, but I see no principled difference between the two cases and, observing the rule of stare decisis, would hold here, as we held in Nance, that the plain*63tiff failed to prove causation. Accordingly, I would affirm the judgment of the trial court.