Other mistake: The credits for the movie say that they are in alphabetical order, but Peter Cullen is listed before Scatman Crothers.
Other mistake: When Perceptor pops up to tell Blaster to radio Prime, Blaster acknowledges that Perceptor is there before he even sees him. And I doubt he could of heard Perceptor because of the amount of noise the lasers were making, and Perceptor didn't make any noise. (00:14:45)
Other mistake: When Devastator throws a piece of the wall during the attack on Autobot city, his face is completely blacked out. Looks like they erased it and forgot to draw it back in.
Answer: Go-Bots were transforming-vehicle toys from around the same period, competition for (or rip-off of, depending on your opinion) the Transformers.
Xofer