After intense studies, Hiller’s engineers came up with the XROE-1 Rotorcycle — a design that was striking in both its simplicity and efficiency. A conventional pedal and cable system allowed the single pilot to change the tail rotor pitch for directional control. Of two prototype XROE-1 Rotorcycles, both were retained at Hiller Helicopters in Palo Alto for further ground tests and flight testing by Peck. One also had to keep a close watch on the tail rotor and tail boom during flights. With its slow speed and short range, no one will ever know how the Hiller Rotorcycle would have performed in a real rescue and evacuation during an actual crash situation.