The AC Cobra is one of the fastest and most powerful cars ever built. It has more than 500 horsepower, but weighs only 1,000 kilos, so it's hard to hold it on the road. In 1961, Texan Carroll Shelby mounted an American V8 engine in an English sports car, and the legend was born. Harry Utesch, a dealer of classic cars, has been a Cobra driver and enthusiast for more than a quarter of a century.He took us for a drive.