Shaggy: Man, I don't know what's worse... Those Muck Men, or Cass Elliot's driving.
Scooby: Cass Elliot's driving!
The New Scooby-Doo Movies (1972)
1 quote from show generally
Starring: Don Messick, Casey Kasem, Nicole Jaffe
Continuity mistake: When Batman and Robin guest star on the show, Batman's cowl changes from covering his neck to exposing his neck.