Blah, another suggestion.
I think a Monster truck would be pretty neat, especially if it had an original body that isn't the jeep's. It would have a good suspension, a little bouncy, that would let it roll over rough terrain.
I just think it's a tad odd that the only monster truck we have has an elongated jeep body rather that a proper one with a roof.
I understand that this is unnecessary, but I like cool looking things :C