The Married Flapper (1922)

A plummet in family fortunes forces Bill Billings (Kenneth Harlan) to become a race-car driver. His wife Pamela (Marie Prevost) has been carrying on a bold flirtation with a wily philanderer, but he tires of her and turns his attention to a younger girl. When Pamela tries to defend her reputation, Bill breaks in and is injured during the ensuing fight. In a reconciliation, Pamela takes his place as driver and triumphantly wins the race.