@matrix@enigmatico ah, i looked into it and i confused func_train with func_vehicle. I mean, HL2/Source/etc has hl2 jeep (and also ep2's jalopy) which is basically evolution of that. It's just that scope of game isn't as big to include vehicles.
I'd love to see TF3 with with less-jank vehicle maps like balloon_race, mario_kart, wacky_races