Actually yes, there are other vehicles, but I can't remember their names. There is the Ghost and one that has the same colors as the ghost. One just hovers over the ground adn the other can actually fly in the air all over and use the big green shot those big dudes fire at you. BTW, if you have a Pistol, shoot those big dudes in the back once and they die!

Just a pointer in there for ya, just in case you didn't know.