For automakers with something to prove, there's no better place to do it than the Millbrook Proving Ground. Located north of London, Millbrook is one of Europe's largest research, development, and testing facility for cars, trucks, and armored vehicles. The facility, developed in the late 1960s, provides vehicle and system assessment, powertrain, and safety testing services, as well as develops alternative fuels. Automakers from around the world flock to the site for emissions, crash, and component testing. The site includes dozens of road conditions, from an American gravel road to a steep hill.