Fallout 2 had plenty of occasions where the damned car would end up with the front and back halves on different maps, frequently in locations where you could no longer walk to it so any quest items you had in the trunk would be lost forever and your save would be forfeit, but not actually that many crashes, no.
Fallout 1 was pretty stable.
Fallout 2 had plenty of occasions where the damned car would end up with the front and back halves on different maps, frequently in locations where you could no longer walk to it so any quest items you had in the trunk would be lost forever and your save would be forfeit, but not actually that many crashes, no.
That was before the patch. And the trunk would actually follow you funnily enough.