The Speedwell Boys and Their Race Car: The Quest for the Gold Cup by Roy Rockwood. In the exciting book Speedwell Boys and Their Race Car: In Search of the Gold Cup, children discover their talent and resilience in incredible adventures on the track. One of the fastest racing cars, their skill and technical knowledge, and the all-important sense of friendship help them beat the competition and win the Gold Cup. Author Roy Rockwood emphasizes the importance of determination, self-belief, and words, challenging stereotypes about "just boys."