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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.

Fiat 500L – first photo

The new Fiat 500L will debut at the 2012 Geneva Motor Show The Fiat 500L is heading for a debut at the Geneva Motor Show next month, and we have the first official photo of the oversized 500. We’ve reported a few times recently on what we now know to be the Fiat 500L. It initially seemed that Fiat would use the ElleZero code name for the production car, but we subsequently learnt that, despite only a passing resemblance to the 500, it was to be the Fiat 500L (for long).

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.