Unobtrusively, but with increasing frequency, the courts are rejecting a theory of liability being vigorously advanced by some members of the plaintiffs\u27 bar with the apparent intent of opening up a vast new source of contingent fee income. The theory, variously labelled as crashworthiness or the second collision doctrine seeks to impose common-law liability upon the automobile industry for injurious consequences- of automobile collisions despite the fact that no defect or mal- function in the vehicle causes the mishap