RACING BIKES
'(<a href="http://www.j-archive.com/media/2008-09-22_DJ_28.wmv">Jon of the Clue Crew spins pedals and wheels at Trek Bicycle Corporation in Waterloo, WI.</a>)  Popular with bike messengers & recreational riders, track bikes are called "fixed" this, so the pedals turn with the wheels, like at the dawn of cycling'
fixed gear