Trucks do self damage or fall through the floor when i start the game or when i change Trucks.
A beam comes out from the Driver to the floor & will cause the same problem. this happens @ random on all maps & trucks.
I'm on win 10 using m& kb & s/wheel & pedals. i have loads of screen shots.
I have wasted hours of game time cos of this even with a starting Garage unlocked.
Iv'e got no chance with other players modded maps cos most of them want you to find the G points.