Some people like to describe their tuned Cooper S as “fire breathing”, but BMP Design of Tyler, Texas wins the brag with the MINI Jet. The 420 hp, 400 ft-lb of torque, RWD monster is literally powered by a Rolls Royce-Allison helicopter engine (the 250-C20B to be exact). Complete with helicopter style lever throttle between the seats, it’s unclear if the MINI Jet retains its original engine up front as well. If it does, that would make this the most seriously badass hybrid to date. More video after the break.