I get this question a lot in class- what kind of cover does a vehicle actually provide? The answer from my own experience is not very much. A non-tactical vehicle is just that, no armor. They don’t stop bullets, usually not even the engines. So while there’s things you can do to safeguard against flats, there’s not a lot else without substantial modifications that not just anyone aside from a Cartel can afford to do.
These two videos are pretty realistic references, even if they’re in Russian.