A rocket car!

The record in drag racing is being held by a rocket car. But the fastest cars in the world - the ones used to set the Land Speed Record - are propelled by propulsive jets emitted from rocket, turbojet, or more recently and most successfully turbofan engines. The Thrust SSC car using two Rolls-Royce Spey turbofans with reheat was able to exceed the speed of sound at ground level in 1997