Haven't set fire to to any grass, or the BT50.
I did manage to put some bush pinstriping on the car yesterday, and got bogged on the beach twice. Winched out once ( took a winch of 6 inches, and the wheels could work again), and a dig out by hand the second time.
Gotta love 4x4ing, but the learning experiences can suck. The cleaning of sand out of the cabin sucks as well.