The Carlsbad or Bust Bash is the second half of the 17th and final episode of Wacky Races.
As the race begins, three of the drivers fall into a pit that Dick Dastardly had dug earlier, but they escape before Dastardly can drive over them. Later, as the racers enter a maze of caverns, Dastardly enlists a caveman to attack them with a boulder.
- Compact Pussycat
- Crimson Haybaler
- Boulder Mobile