Violent Runner Vibrator summary:

"Vibrators" are a new breed of humanoids created in labs, whose origin comes from the manipulation of neural cells responsible for reckless driving, cells which can be found in every living being, since the "dawn of time". They are antropomorphic vehicles, very fast (and furious), they get their energy from sexual pleasure. because of this it's necessary that every owner 'ride" them as vigurous as possible, while they run on the roads.