We all know what Peter Sagan can do on a road bike. After all, he has won the coveted Green Jersey – awarded to the best sprinter in the field – at the Tour de France the past two years. But did you know that he got his start in mountain biking? Recently, he reconnected with his friend Marco Fontana, himself a pro mountain biker, and hit the trails on the new Cannondale F-SI. I’d say it looks like they were pretty happy with how the bike performed. Check it out in the video below.