The Tumbler is the most badass Batmobile ever (it's a freakin' tank), but what if it was a Transformer? This is definitely what it would look like: A Decepticon-shredder. Bat-ingenuity, Transformer tech and sheer badassery definitely make this the beastliest 'bot out of Cybertron. Optimus Prime had better watch his back. I want one. [Jester Pictures via Autoblog via io9]
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@DarthTader: the transformation sequence for this is so far beyond the realm of cool that it is to be unimaginable. While the tumbler was transforming, your mind would have to come up with the second coolest image possible, that of Angilina Jolie and Jessica Alba having a naked katana fight on speeding motorcycles.