A man once tried to summit Mt. Everest by bike.
In 1996 a man by the name of Göran Kropp set off with plans to ride his bike from Sweden to Mt. Everest and summit the great height. Armed with a specially made bike, he arrived at base camp 6 months later and began to climb. At just 100 meters from the top though, he turned back, as it was too late in the day to continue. Three weeks later however, he took it on again and this time, made it to the summit.