I think the show is more about entertainment value than actual car testing. If they really wanted to make a good dune buggy X, all they would have to do is half of the lightening they did on the BMW. They didn't even take off the bumpers or any trim. He basically just put big tires in the back. Its a dune buggy, take off the bumpers, engine cover, trunk cover, interior, side and rear glass, cut the fenders for taller wheels. Just to name a few things, probably a million other things you could do to lighten the car. He might as well have left the roof on and turned on the AC to cruise the beach. I also don't believe the Fiat beat either of those two other cars in a drag race.