When will the mechanical place of injury rule be rejected in personal injury cases?

When, in Babcock v. Jackson * * *, we rejected the mechanical place of injury rule in personal injury cases because it failed to take account of underlying policy considerations, we were willing to sacrifice the certainty provided by the old rule for the more just, fair and practical result that may best be achieved by giving controlling effect to the law of the jurisdiction which has the greatest concern with, or interest in, the specific issue raised in the litigation.