50 over fifty: Locke McCorkle

Locke McCorkle has a couple of claims to fame: He served as the inspiration for  a character in Jack Kerouac's book The Dharma Bums, and he once wrote a successful sex manual. Oh, and that motorcycle in the background? He still rides that on California race tracks. Turning 60 didn't slow him down. Neither did turning 70. Or 80...