Ford may get around to building a new Shelby GT500 one of these days, but now you can buy a new one that looks like the old one.  Revology Cars has unveiled at the SEMA show in Las Vegas an officially-licensed reproduction of the 1967 version of the classic muscle car built on a modern platform.  The Florida-based company already sells several Mustang models, each with all-new bodywork, drivetrains, suspensions and engines.