This is one of the more bizarre Mustang prototypes we've seen. The model is an S550-generation Shelby GT350, but with one caveat: the gigantic bulge in the hood!

The massive raised section peaks toward the front before tapering down in both directions. The purpose of this hood configuration is unclear, it's possible that the model is a powertrain mule for the S650 Mustang, and the hood was a makeshift way of testing the powertrain

What this GT350 mule has is anyone’s guess, but in 2011 there was a mustang with a similar hood setup, which turned out to be a Cobra Jet.

Other than that, the prototype appears to be identical to the S550 Shelby GT350.

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