Carspotter Jeroen caught a camouflaged Corvette ZR1 prototype mid-test, its supercharger whining like, in one viewer’s words, a TIE fighter, complete with visible exhaust flames and a Mercedes seemingly overtaken in the process. Filmed near known manufacturer testing routes before Chevrolet ever confirmed the car’s final specs, the footage remains a rare, unscripted look at the development mule behind one of the most track-focused Corvettes Chevrolet has built. Watch to see what gave this disguised prototype away.