I have been trying to find out the name of a show I watched when I was a kid, probably on Cartoon Network, during the late 80's-early 90's. The show had a real set with a boy who talked to a boxy-shaped robot, but also had extended animated parts where characters from all different animated cartoons would race each other. There was usually a Scooby car, and some cars with villians (like the villians from Rocky & Bullwinkle, etc.), Speedracer's car, etc. and they were all racing each other and the villians especially would often do sneaky things to get ahead. These animated parts were alternated with the boy and the robot, like a story that they were watching or telling. If you remember this show please confirm that I'm not crazy and I didn't just make it up! :)

If anyone else is looking for it, I found it on someone else's question: the show was called Wake, Rattle & Roll, and later Jump, Rattle & Roll.