Warm up Sketch : More Flintstones

So, I'm working on an illustration that I can't post here but it is a parody of the Flintstones & Jetsons. I'm not going for the classic Hanna-Barbera look, more my style. There will be some George Jetson's to follow as well. There won't be any Barney, Wilma, Dino, etc., so don't get your hopes up.

Here's Fred & his car.