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Spring has sprung, and a bumper crop of prototypes are emerging on the highways and byways of the metro Detroit area. The most recent species to cross the path of our cagey photogs is what we believe to be the Ram Rebel TRX, accompanied by the distinctive whine of a supercharged V-8.

Spy Photos of the Ram Rebel TRX Pickup Prototype

Looks like the Ford F-150 Raptor isn't going to have the sandbox to itself anymore.

From Car and Driver