Graeme Obree has dedicated his cycling career to making the cycling position as aerodynamic as possible. Rather than lying further and further back, like fast recumbents do, he went the other way and moved more and more horizontal with his head at the front. Prone, in other words. His latest attempt has been a fully prone and fully faired racer, which he planned to race at the Battle Mountain speed contests.
He is not the first to try the prone position, as shown in this 1907 prone bicycle design. This looks like it hurts to ride it, but its not so different in concept from Obree’s prone racer.