What Jenkins didn't know was that his attacker, identified by police as Joshua Monigold, was fleeing police in a stolen truck. He apparently decided he'd have a better chance if he took Jenkins' sport bike.
The good news: Jenkins was able to fight off the attack. The bad news: when he gave up and drove off in the pickup truck, the assailant ran over the motorcycle, likely destroying it. The entire episode was caught on video from the air.