Which of the following did not feature in the cartoon 'Wacky Races'?

The Dragon Wagon did not feature in the cartoon Wacky Races. The Dragon Wagon is a vehicle that did not participate in the race in the Wacky Races cartoon series. The cartoon primarily involved various other iconic vehicles like the Turbo Terrific, Mean Machine, Crimson Haybailer, Compact Pussycat, Bulletproof Bomb, Army Surplus Special, Bouldermobile, Arkansas Chuggabug, and Creepy Coupe. Hence, The Dragon Wagon is not among the vehicles that appeared in the show.