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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.

Crash injuries force Franchitti to retire

SCOTTISH RACING STAR Dario Franchitti has been forced to retire after suffering a number of injuries in a high-speed crash during a race in the US last month. The four-time IndyCar series winner spent five days in hospital after suffering concussion, a fractured vertebrae and a broken ankle in the last-lap crash at the Grand Prix of Houston in Texas. Franchitti, originally from Bathgate, West Lothian, said he had taken the decision based on medical advice.

Porsche recalls GT3 for fire risk

Porsche is telling 2014 911 GT3 owners to park their cars until the company can check them out for engine problems that could cause a fire. Porsche says it will pick the vehicles up and take them to a Porsche Center immediately, and that safety is its immediate concern. Two vehicles in Europe caught fire after engine damage occurred, so Porsche decided to inspect all 785 vehicles delivered worldwide.