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An inventor attempts to sell his new invention and still has time to fall in love in this romantic comedy. The fellow becomes so obsessed with perfecting a new type of gasoline engine that he ignores the customers who patronize his mechanics garage. One day the car of an automobile tycoon and his daughter breaks down and they must visit the mechanic's business. Opportunity seems to be knocking so he doesn't hesitate to pitch his invention to the stranded magnate. Impressed, the automaker calls in his head engineer. The fellow comes in and it's plain that he resents the inventor's attention towards the pretty daughter. He dismisses the new engine and in the end, the two iron out their differences at the race track.