no doesnt really harm your car, thats why they do it on grass. The field that is being used this year hasnt been used before so is a little bumpy but give it a few goes and it'll sort itself out
why car is pretty much completly standard atm so copes well on the grass
you dont win any money or anything, just medals and bragging rights. It's not about prizes. Winners are invited to a dinner at the end of the season.
this is the Lancia Intergrale (4 wheel-drive) which i beat haha