Hot Wheels

From: ToonTracker.com
Hot Wheels was based on a product by sponsor Mattel Toys. Because of it's close connection with Mattel's Hot Wheels line of toy cars, the Federal Communications Commission demanded that the opening to the Hot Wheels cartoon, along with any references in the cartoon to the Hot Wheels title and any mention of the makes of cars, all be counted as commercial time. The FCC was, in effect, ruling that the whole cartoon show was a commercial for the Hot Wheels toy cars and not an entertainment program. This led ABC to cancel the popular series after only two years on the air. The FCC ruling remained in effect until 1983, when a new lineup in the FCC ended the restrictions.