The Energon Pub

Are there any Transformers that become a bus?
Ever?
I can't find any. It's another one of those things that bug the hell out of me in my endless quest to know EVERYTHING about Transformers.

Also, I want to make one if there isn't.
Thanks!
(I don't care if it's a School Bus or otherwise.)

theres no actual toy buy transformer that I know of but in Cybertron there was a TF that turned into a bus and another that turned into a stoplight (Signal Lancer) but I dont think the bus got a name............but...............I could be wrong on all this