I once thought about that myself - having a FMJ to punch a hole first followed by hollow points. However, if you're counting on the FMJ to punch the first hole then you have to put the HP through the same hole, otherwise the first hole made by the FMJ doesn't matter. In the case of the car door he likely wasn't using the sights so it wouldn't have mattered what the first round was the second round would have made its own hole.
“War is an ugly thing, but not the ugliest of things. The decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse. The person who has nothing for which he is willing to fight, nothing which is more important than his own personal safety, is a miserable creature and has no chance of being free unless made and kept so by the exertions of better men than himself.”
– John Stewart Mill