When you drive a car, you have a high chance of desyncing at least a handful of times. The laggier the area, the more often it happens. Lately, it has been nearly impossible to get a car into my base on Altar as I will end up crashing going 30mps into a fence. I will be going up the hill and all of a sudden, my car zooms out of control going from 4mps to 20mps and crashing. I do use mods and the area is customized. My trader is also there, meaning it is very laggy from the amount of items.