Hot Rods and Racing Cars #20

A racer named Jim proposes to his girlfriend that they use his winnings from an upcoming race to get married, but she expresses skepticism about his plans. After Jim begins experiencing mysterious mechanical failures during races, he suspects sabotage and investigates, eventually discovering that a man named Lupo is responsible for the tampering. The story culminates with Jim confronting Lupo and his associates, thwarting their dirty dealings before the big race. The issue also includes a "Technitopics" educational feature explaining automotive cooling systems and their components.