A man who showed up at the Knoxville police department for a court ordered safe driving class never made it -- he ended up in jail instead. Police say the man was killing time waiting for the class to begin by smoking a joint in the police station parking lot. A passing police cadet smelled the odor of marijuana and approached the man's car. When he spotted the uniformed cadet, the man backed out of the parking space so quickly he almost ran over her. The man drove out of the police lot...parked at a bank across the street...then returned to the police department property for traffic school. He was arrested instead. Good news for the luckless motorist: he wasn't charged with a drug offense. The bad news: he was charged with aggravated assault with a vehicle.