Don't know that one, but I got another quote:
"I saw this in a movie about a bus that had to speed around the city, keeping it's speed over 50. And if it's speed dropped, it would explode! I think it was called: The bus that couldn't slow down."
++ [ originally posted by tarmpropp ] ++
No, it's the one were Homer is an artist and Bart needs to get him mad so he can create art. I've seen that many times, the first 10 min of that episode is some of the best TV ever.