Currently available on 2 streaming services.

Wacky Races - watch online: streaming, buy or rent

You are able to buy "Wacky Races" on Amazon Video, Apple TV as download.

Cast

Peter Woodward
Dick Dastardly (voice)
Billy West
Muttley / Tiny (voice)
Diedrich Bader
Peter Perfect (voice)
Tom Kenny
Bella (voice)
Jill Talley
IQ Ickly (voice)
Christopher Judge
Brick Crashman (voice)