"Motor Boys" is a series of children's books written by H. Irving Hancock that follows the adventures of a group of boys who are passionate about automobiles and racing. The stories highlight their friendships, teamwork, and problem-solving skills as they navigate various challenges related to their love for cars. The main characters, including Bob Baker and Joe Dawson, often find themselves in thrilling situations involving car races, mechanical repairs, and competitions. The series emphasizes themes of loyalty, bravery, and the importance of following one's dreams, making it an engaging read for young automobile enthusiasts.