Casting "Wacky Races"

I bloody love Top Cat, and I'm pretty disheartened to hear that next week there's a new, 3D, all-digital film version of it. It sounds utterly dreadful and, possibly, worse than the recent Yogi Bear. (Well, OK, I haven't seen Yogi - because the trailer was far too much.) But Wacky Races, which I also love, could make a great live-action film. Here's my dream cast list.