Carroll Shelby's million dollar muscle cars

In 2003, Shelby joined back up with Ford Motor Co. after a separation of more than 30 years.

The result was a new line of Shelby Mustangs with modern technology.

This new generation of Shelby cars was announced at the 2005 New York Auto Show where Ford showed off a concept version of a new Shelby GT500. The production version of that car went on sale the following year as the 2007 Shelby GT500. The first one of these modern Shelbys sold for $600,000 at a Barrett-Jackson collector car auction.

Most of these new Shelby Mustangs are actually built entirely on Ford production lines but some get extra work done at Shelby's Las Vegas factories.Among those models was the 2007 GT500 Super Snake which produced over 600 horsepower. Newer versions can create as much as 800 horsepower.

NEXT: Shelby 1000