The Cyclone Rider

Richard Armstrong, inventor of a carburetor that will make his car a sure winner in a road race, works on a skyscraper for Richard Steele and falls in love with his daughter, Doris. Though Steele prefers Trask, an underworld king, he agrees to discuss marriage if Armstrong wins the prize money. Though losing the race, Armstrong averts Trask's efforts to kill him and wins the girl.