Bobby's Girl
Bobby is an underachieving high school kid with a deep love for motorcycles. His most recent achievement seems to have been getting photos of himself on a road trip printed in a motorcyclist hobby magazine. When he gets a letter from a girl his age, he decides to write her back.
Directors: Toshio Hirata
Writers: Fumio Ishimori, Yoshio Kataoka
IMDB: tt0185196