Optimus Prime As A Green Lantern in Defunct Justice League/Transformers Crossover
Check out some concept art for a Justice League/Transformers crossover by artist Phil Jimenez.
Jimenez posted some images on his Facebook, with the news that he and Chris Ryall pitched the crossover to DC Comics.
Looks a lot better than the Avengers/Transformers crossover, or at least, couldn't be any worse.
And we see that Optimus Prime has indeed got the touch — the touch of the Guardians with a Green Lantern ring!