The Jokermobile (also known as the Jokemobile) was the Joker's road transportation and the equivalent of Batman's Batmobile.
History[]
It was a specialized modified roadster with a bust of the Joker's face on the front grille, four different colored seats, and front hot rod exhaust pipes on both sides of the engine.
Robin was far from impressed with it, especially since it had no seat belts or wing mirrors and casually mentioned to Batman, that it probably violated at least fifty sections of the Gotham state vehicle safety code.