Cars glitch while driving. Especially going into populated areas. Causing the game to buffer and often times it pushes the car into an object - completely destroying the bumper, radiator, wheels, etc.
My brother and I were just driving on the road north of a small town on the coast. When we saw another player just ahead crossing the road. Immediately the car we were in and that I was driving began to bounce and flip sideways from my perspective. So I braked and stopped the car. My brother said nothing was happening on his end and the car just came to a stop. While this confusion was going on the other player lit us both up with his gun and killed us. I just spent the entire weekend putting that car together. We lost all our guns and gear we had on us. Including a pair of NVGs I had on my head. Unfair and proved all the time we had spent playing the game and grinding for that car and gear ended up being a complete waste. We didn't even get to shoot back because we were stuck in a glitching car. Frustrating!