Cast[]
- Lightning McQueen as The Cat in the Hat
- Fillmore as Horton the Elephant
- Mater as Sam-I-Am
- Doc Hudson as Joey
- Finn McMissile as Norval the Fish
- Sheriff as The Lorax
- Holley Shiftwell as Cindy Lou Who
- Chick Hicks as The Grinch
- Sally as Sarah-Hall Small
- Flo as Jane Kangaroo
- Sarge as Fox in Socks
- Luigi as Thing One
- Guido as Thing Two