1. Set a fence kit
2. Install two cutten trees
3. Drive slowly with the car on it
4. The car have problems to drive over it, help with [Shift] + [W]
5. Car drive now over the building
6. After some meters car start jumping, turn over

7. Stop driving, switch of the motor
8. The car is back on the spot.
9. Start driving again
10. After some meter the car start jumping again
11. In one time it sunks in ground (look to the video in description)

After i had disassembling and replacing all four wheels the car works very well again --> No problems anymore. (driver with the car over field, streets)