Four Wheel Motorcycle

have u ever seen motor bike racing? well, when the bikes go round the tight turns they lean into the bend which allows them to keep a fast speed and still take the turn.

the bike would only fall over if they get too low, or if the bike is going slowly, otherwise it stays on its wheels and after the turn they bring the bike back up so the can put the pedal to the medal on the long straights. i think that covers it!
 
Exactly. So why the hell do they make bikes that work? Surely they should make them biased on one side, to increase the risk of crashes :)