I was coming to complain about a similar bug, but it didn’t crash the game.
I was driving in my vehicle, fully enclosed, and a grappler pulled me off through the closed door onto the sideboard. I was going 39 at the time, and the vehicle insta-stopped, so I was stuck in quite a mess of zombies. Fought my way out, but they did a lot of damage to my vehicle (destroyed my FOODCO™ Kitchbuddy, which is really annoying).
Anyway, there are at least 2 things there that shouldn’t have happened, all related to the initial grappler silliness.