I totally think someone should make it. It should look like, say, either a 1x1 plate or a 2x2 plate, should be a one-man vehicle, and when the player sits in it, arms should be pointed forward. Should move like the jeep. Hmm, perhaps the 1x1 plate would be the best model for it, so it'd be covered by the player's own model.
Also, it'd be nice to have the player's arms move when turning, kinda like if they were rotating an invisible wheel.
And don't you DARE tell me I've watched too many YTMND thingies!
EDIT: In a spur-of-the-moment inspiration, I'll just try to do this myself. :P