Wacky Races ran on CBS from September 14, 1968, to January 4, 1969. Seventeen episodes were produced, with each episode featuring two different races.
"Wacky Races" by Hoyt S. Curtin
I may be wrong but are you thinking of Wacky Racers?
I belive you are referring to Dick Dastardly and his sidekick Muttley from the Wacky racers. Hana Barbara, circa 1970
Mutley from the Wacky Racers had a rotor tail, but it wasn't in the 1950's though. It was the late 60's.
Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers Rainbow Racers
from a wacky person
Wacky WallWalker was created in 1983.
Wacky Wheels happened in 1994.
Wacky Packages was created in 1967.
Wacky Waiters happened in 1982.
Wacky Dust was created in 1938.
wacky is real there is a bunch of wackys on webkinz.com