An enthusiast in the US has built a motorised coffin on wheels, powered by a pulse jet. Its builder, Bob Maddox, has a strong interest in improbable vehicles and built the vehicle using a coffin and a small pulse jet, all mounted on a lightweight chassis and wheels. Weighing just 136kg, his Maddoxjets Coffin Car can accelerate from 0-100km/h in around nine seconds. According to Maddox, he once drove the Coffin Car at 100km/h but was concerned for its stability and wary of attempting to drive it any quicker.