Makes me wonder how thick the steel is on old Pete's & Kenworth's...
I remember old Mack Firetruck doors were heavy as heck...70's were kind
Regular car doors will get penetration through them, but then the bullets fail
to penetrate the other side, usually. At least 9mm & .45acp seem to stay inside
the car's cabin, as the Box O' Truth has shown on occasion.
Someone was telling me of a truck graveyard where lots of trucks had been dumped
so that they could rust to death...if it's still there, that would be the perfect
place to test a variety of old trucks.
Wouldn't surprise me a bit if older trucks had thick steel & interior panels that
would cause things to flatten out enough to stop 'em. There's also the question of Angle...
would 45-degree angle shots deflect more??