The Mile-a-Minute Man (1926)

Old Ironsides, an automobile manufacturer, is infuriated to learn that his competitor, Greydon, has improved the motor on his racing "Greyhound," which is superior to his own "Skyrocket." His son Speedy, the factory superintendent, who is in love with Paula Greydon, informs his father that a new high speed carburetor will restore supremacy to the Rockett car. At a social affair, Mr. Rockett and his son become involved with fortune hunters Eleanor Hoyt and Mrs. Pennywaite, aided and abetted by Brett, who is an avid suitor of Paula's and has a financial investment in the Greydon car. Later he attempts to waylay Speedy, and in desperation he kidnaps him the night before the race; after many difficulties, Speedy escapes, reaches the track via airplane, and wins the race, in spite of Brett's attempts at sabotage. Paula and Speedy's marriage consolidates the business firms.