With enough passion, skill, and time on your hands you can do anything. IMO though, the most important of these three attributes is "time on your hands." This is made evident by the coolest Guitar Hero video that I've yet to see. Bike Hero is just what its name implies, Guitar Hero recreated on a bike.
Now before you start prepping your "Bike Band" (you know, Rock Band on a bike) video, it should be noted that according to Creativity Online, this video was created by ad agency, Droga5, and not just a couple of suburban teenagers with too much time on their hands.
Still, someone had to actually do it, so it's still impressive