Hi After a intense week of playing I only got a few things that could be improved.
1. Trucks/carts fall through the ground or are upside down.
- Tractor fell through the ground, might happened because below the tractor there was a mine
- Carts seem to be being tipped over. I only saw it happens to others until today. After relog cart was upside down
2. Optimilization
- After some time it seems to drop frame rates and game gets clunky.
- Rendering will not happen - result is truck in the water 
- Some water seems to lose its graphics (random)
I was thinking about more before i went to bed .. seems to got lost ...
Anyway, this game... is so far the best for me.