The Love Bug
Herbie is unloved and unwanted, until Jim Douglas, a struggling racecar driver, shows him some compassion. Herbie is so moved by this that he follows Jim home. Through a series of misadventures, Jim comes to own Herbie, and races him. Herbie loves to race, and Jim becomes quite successful on the race track, much to the chagrin of Thorndyke, Jim's arch-rival. Jim, of course, presumes that it is his driving skill that is leading to his success on the track, but we know better, and soon, Jim does as well, though almost not soon enough.