Sometimes when you drive into a fence too fast, you become stuck. Sometimes I can manage to slide off by driving for a minute or two, but sometimes I cannot get unstuck and the vehicle is lost.
This may be a separate issue, but sometimes when you drive the V3S into a fence, the V3S bounces rapidly. I crashed into a fence and the V3S started bouncing vertically, going completely underground, and into the air, while we were still in it. After the truck finished freaking out we landed back on the ground and could drive away.