The First Quadriplegic to Complete the Tough Mudder

It's the toughest race on Earth. Oh, it's shorter than a marathon. The Tough Mudder is only 5 miles long. But along that race, contestants are dunked in freezing cold water and electrically shocked. They have to crawl through mud and climb over high and slippery obstacles. And once they finish the course, they do it again. And again. Whoever completes the most number of laps in 24 hours wins.
21-year old Rob Camm of Breadstone, Gloucester, UK, wanted to do the Tough Mudder. But 2 years ago, he was in a car accident that left him paralyzed from the neck down. That didn't stop him, though. Camm just completed the race in an off-road wheelchair that he controls with his chin. The Daily Telegraph reports:

His specially-made Extreme X8 electric wheelchair can reach speeds of 10km per hour - and Rob has even been able to clear tree branches and tow his dad's 4x4 with it.
It took him through a course which is made up of Britain's "deepest, darkest mud and soul-crushing terrain", according to Tough Mudder organizers.
Rob added: "I do nowhere near as many physical outdoor challenges as I used to do and it is a huge thing for me to have that challenge again."