Dan Oviatt, known as "Captain America," rides his mini bike during a three-day Mini Bike Winter Olympics Sunday, Feb.19, 2012, in Portland, Ore. “Zoobombers” are known for riding pint-sized kids’... more 
Dan Oviatt, known as "Captain America," rides his mini bike during a three-day Mini Bike Winter Olympics Sunday, Feb.19, 2012, in Portland, Ore. “Zoobombers” are known for riding pint-sized kids’ bikes at breakneck speed down steep streets in Portland. (AP Photo/Rick Bowmer) less 
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Associated Press | Photo By Rick Bowmer
Tue, Feb 21, 2012 6:00 AM EST