Cars/The PowerPuff Girls

Cast

 * Gill (from Finding Nemo) as Professor Utonium
 * Sally Carrera as Blossom
 * Holley Shiftwell as Bubbles
 * Flo as Buttercup
 * Lizzie as Ms. Keane
 * Chick Hicks as Mojo Jojo
 * Lightning McQueen as Brick (since they're both red)
 * Mater as Boomer
 * Ramone as Butch