favorite car: esperanto (green w/ gold rims & hydraulics)
favorite bike: freeway
favorite boat: jetmax
favorite air transport: shamal
others would be the roadtrain w/trailer (fun as hell to drive), the towtruck (used it for most of my exports... acting like i was towing someones car... equipped with the clothes too, lol), vortex, buffalo, lawnmower, walton, and the sea sparrow
... but as far as cars/trucks/SUVs goes, i'll drive anything and, i've love driving the big boat cars like the esperanto... once you get them up to speed, they're almost as good as a sports car (IMO) if you can handle them right
...edited for some misspellings, additional comments, and changing one of my favorites... it's hard to decide!!