Folks with lower leg paralysis may be the fastest riders on the road if the Velo Handcycle is ever developed. This concept tricycle from Gerardo Leon is designed to be lightweight and race-ready.
The body of the Velo Handcycle would be made of fiberglass and feature some awesome futuristic styling. Upper body strength would definitely be a must here, as the Velo Handcycle is powered solely by the arms. Hopefully this trike gets developed sooner rather than later. Speedy cycling is for everyone, after all.