Retired Formula 1 driver Tarso Marquez has created TMC Dumont, a unique motorcycle concept powered by an aircraft engine. The crazy-looking motorcycle is powered by a 300-hp Rolls-Royce helicopter engine. Huge Continental V6 engine from the 1960s sits between two 36″ hubless wheels. The motorcycle is impractical from every possible angle, but it is one of the craziest motorcycle concept we have ever seen.
