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15 must-sees at the 2014 Goodwood Festival of Speed

There aren't many places in the world where you can get up close to the Audi R18 e-tron Quattro that won this year's 24 Hours of Le Mans, but you can at the Goodwood Festival of Speed. If you’re lucky, you might even get to talk to a team member and take a peek inside the cockpit of these incredibly advanced LMP1 prototype endurance racers. As a bonus, look out for its rivals: the hybrid Toyota TS040 and Porsche 919.

Contest: LA Design Challenge 2007

Audi Virtuea Quattro Designed at the Volkswagen/Audi Design Center California by Heather Shaw, Jae Min, Mattijs Van Tuijl, Karl Strahlendorf and Christian Schoen; the Virtuea Quattro is a single-seat autonomous driving machine. It functions as a solid unit at its core, while providing a myriad of possible holographic exteriors stored in a library and accessible through the vehicle's 'interactive holographic interface'.  Powered by hydrogen, the vehicle combines artificial intelligence with avenues of self-expression. The Virtuea's holographic exterior provides a variety of possibilities, allowing the driver to select from the most innovative designs from one minute to the next.

The 500-hp club

Petrol heads, continue to rejoice: Car manufacturers have not ignored your cries for high-powered cars and trucks. Despite tightening emissions regulations and rising fuel costs, automakers are building an increasing number of vehicles putting out at least 500 horses. Based on our research, there are over 80 cars sold in the United States that deliver these burnout-inducing numbers (not including tuners such as Mosler or Callaway).