Actually, the car does belong to "Stevie" the pitch man. All paid for. And it made a handy prop.
I think he just wanted to show it off!
Tell you what, the guy is really lovable. Kind of obnoxious sometimes, but generous to a fault and everyone adores him. The car was given to him by his ex-girlfriend's father; apparently he kept in contact after breaking it off with the girl, ex's father liked him a whole bunch and knew he greatly admired the car. Ex's father is ill and in the process of passing out his earthly possessions, so he gave Steve this amazing car.
Some guys have all the luck!