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Driven: BMW i8

When BMW unveiled the Vision EfficientDynamics concept at the 2009 Frankfurt motor show, we wrote: "for our money, it's the first time a major carmaker has really attempted to communicate ‘green' technology in an aesthetic sense." Fast-forward five years and we've swapped the show halls of the IAA for a beauty spot on the north-west coast of Scotland. And, while the car's name has changed to i8, our sentiment towards this genre- and era-defining car remains. Admittedly the production car's design execution hasn't received the universal praise of its concept forebears, but, on a remote outpost of the British Isles, a Protonic Blue i8 couldn't look more exotic.

Hyundai introduces Bisimoto Genesis coupe for SEMA

Hyundai began its SEMA push on Monday with a 1,000-hp Genesis coupe from Bisimoto Engineering. We're not sure how the company managed to squeeze that many ponies out of the Genesis' 3.8-liter V6. We're guessing alchemy has something to do with it.

The scramble for scarce tires

North American automakers are struggling with a nagging shortage of tires, caused in part by tire plant closings and rising demand for low-volume specialty tires. Automakers are paying much higher prices -- double-digit percentage increases from a year ago -- as tire makers gain pricing power. "We have been bombarded from every side for additional tires, and we can't keep up," said David O'Donnell, Continental Tire's vice president of original equipment in the Americas.