Just a few years ago, production cars with more than 500 horsepower were extremely rare, with the players limited to not-terribly-practical rides such as the Lamborghini Murcielago and Dodge Viper. Today there are at least a dozen brands that offer a U.S. production vehicle with 500 or more horsepower, with prices starting as low as $40,930—the base MSRP of the V8-powered 2007 Ford Shelby GT500....
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