I've watched My Little Pony: Friendship Is Magic on the Hub, and I'm watching it on Instant Netflix. It's really different from My Little Pony and My Little Pony Tales. MLP is fantasy/drama and MLPT is friendship/drama, while FIM is humor/friendship.
Oh, I like Wacky Races, too, and there's a chance I've seen Dastardly and Muttley in Their Flying Machines. Do you remember the live action/animated kids' show Jump, Rattle, and Roll? It was on the Disney Channel, and it was originally called Wake, Rattle, and Roll. Anyway, one of the series of animated shorts they played was "Fender Bender 500." It's similar to Wacky Races, except the only characters from WR are Dick Dastardly and Muttley. The other racers are the Hanna Barbera characters Yogi and Boo-Boo; Huck and Snagglepuss; Waly Gator and Magilla Gorilla; Top Cat and Choo Choo; Quick Draw McGraw and Baba Looey; Pixie and Dixie; Augie Doggie and Doggie Daddy; and Winsome Witch with her cat Lucky.
Apparently there are episodes of Wake, Rattle, and Roll on YouTube.