In basic terms, the powerplants that drive the Dodge Viper, Bentley Arnage T, Porsche 911 GT2, and Lamborghini Murcilago-the four cars, available in America, that carry the power flag for their respective nations-work just like the four-banger in an old Corolla, or the one in a 20-horse Model T, for that matter: suck, squish, bang, blow. A piston slides down a cylinder, drawing in air and fuel, suck. It moves back up, compressing the mixture, squish. A spark ignites the volatile brew, bang. The piston forces exhaust from the cylinder, blow. A connecting rod and crank convert the back-and-forth action into circular movement at the wheels, and the cycle starts again.