A tricked out, modified British vehicle, usually an overland vehicle (similar in concept to a rice burner - tricked out, modified Asian car), but with one possible difference (not always true). Usually, someone with money would spend the money on modifying such vehicles, whereas younger people will trick out their Asian cars any way they can afford. This can be applied to SUVs in general.
I don't believe this... Look at this! Look at this biscuit burner going by. You sure can't take that Range Rover anywhere off-road!