We have been playing around with the Offroad in the latest EXP build for the past few days. We have noticed that when we drive it within the proximity (approx. 30m) of other vehicles, the driver experiences massive desync - often causing the game to freeze (although the sound continues playing).
We have reproduced this with the Offroad within the proximity of the V3S (Cargo), the Sedan, and other Offroads. It seems to occur both in situations where the other vehicle is parked stationary and when it is occupied (making "convoys" impossible).