I keep an el cheapo disposable camera (with flash) in both mine & my DW's vehicles for documentation purposes in case of an accident.
Just make sure you change them every so often. I did that, and eventually grabbed it and took some shots. They were terrible: poor resolution, grainy, muddled. I'm guessing the heat doesn't do the film any good.
I replaced it with my previous digital camera (it's not great, but oh well).Some fresh batteries are in the glove box with it.