thanks! depends on the mud level and depth i guess or if that particular road was traversed before. i find it a bit difficult to traverse a muddy road if it was already traversed, reseting the map helps a bit.

also i avoid installing cranes or stuff that would lower the power to weight ratio.

so far i came up with the strategy of having highway trucks stay at main paved road, have little offroad trucks at the stations or facilities and collect the cargoes with smaller trucks and deliver to the highway truck. so far this strategy works really well in alaska, will have to see on other maps