Speed Buggy is a 30-minute Saturday morning animated series produced by Hanna-Barbera Productions and broadcast on CBS from September 8, 1973, to August 30, 1975. Production Sixteen 30-minute installments of Speed Buggy were produced in 1973. The show was so successful that it aired on all three major networks. It aired first run on CBS until 1975. Reruns aired on ABC in 1975-76 (later replacing Uncle Croc's Block), then on NBC, replacing the canceled McDuff, The Talking Dog, from November 27, 1