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Koenigsegg's craziest supercar yet debuts at Geneva

Here's what you need to know about the Koenigsegg One:1. It weighs 1,360 kilograms; it produces 1,360 hp. One horsepower per kilogram, which is why mad scientist Christian Von Koenigsegg is absolutely justified in bragging about it: it's the world's first "mega car," he said.

Mercedes-Benz GL: 2013 Autoweek Best of the Best/Truck

Today, Autoweek editors announced the Porsche Boxster S and Mercedes-Benz GL as the car and truck winners at the 2013 Best of the Best awards presentation. Editor Wes Raynal revealed the winners and presented Best of the Best trophies to representatives from the winning auto manufacturers. 2013 Mercedes-Benz GL: Autoweek Best of the Best/Truck "The GL's ride set it apart from the competition,” Raynal said.

CAR tech: Audi's miracle e-fuel (2013)

Global warming; sky-high oil prices as reserves peak; spiralling crop prices and intense pressure to find fertile land – society faces immense challenges, as it strives to protect the planet and keep our cars on the move. Audi is working on a miracle fuel that could help mitigate these problems, in a facility under construction in the uncompromising, scorching environment of New Mexico, USA.  Not content with having a range more diverse than London’s World Pride parade, Audi is moving into the fuels business, in partnership with US biotech firm Joule Unlimited. The pair are developing carbon-neutral synthetic fuels, called e-fuels in keeping with Audi’s E-tron eco brand.