McLaren puts the new 12C Spider in a downhill race against a snowboarder at the notoriously treacherous Loveland Pass in Colorado. Pikes Peak hill climb record holder Rhys Millen races against X-Games medalist Chanelle Sladics. Loveland is the highest mountain pass in the world that stays open during the winter. It's located at 11,990 feet (3,655 m) above sea level. Yup! That's the perfect spot for racing in an open-top supercar.