Reminds me of hte One-Armed-Bandit, who raced in AHRMA vintage.  As his name implies, this guy ran with just one arm, controlling throttle, front brake, clutch, and bars one-handed with his custom CZ (I think).  And he wasn't just there as a token disability rider.  Oh no.  This guy mopped up the competition.  I've never seen him place lower than third in a race.  It really is amazing to see someone with just one arm power-sliding on the power and shifting through the gears.  What the 'Bandit lacks in an arm, he makes up for with balls.