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Concept Car of the Week: Ford Mustang I (1962)

Influenced by science fiction and Space exploration in the early sixties, Ford Motor Corporation developed a series of research vehicles to test innovative layouts, experimental technologies and futuristic styling on such radical concepts as the X2000, Levacar Mach 1 and the Gyron that still captivate the imagination. In parallel, Ford's advanced styling studio was also working on a more rational project that could influence production models to compete with GM Corvair Monza. Stylists and engineers came up with a high-performance 2-seater vehicle with the engine placed in front of the rear axle for better aerodynamics and improved weight distribution.

BMW 640d xDrive announced

On Thursday, Greg Kable waxed effusively about the new BMW M550d xDrive coupe, suggesting that it was the ultimate 5-series for everyday use. On Friday, Munich announced that the 5's two-door sibling will receive an AWD diesel variant: the 640d xDrive. While not quite as high-zoot as the 5-series' top oil burner, the 640d's 3.0-liter, twin-turbo straight-six cranks out a respectable 465 lb-ft of almighty torque between 1,500 rpm and 2,500 rpm, plus 313 hp at 4,400 rpm—numbers that, according to BMW, will carry the 6-series to 60 mph in 5.2 seconds.

R8 e-tron electric supercar will be built, Audi says

The Audi R8 e-tron is back on: Audi has backtracked on an earlier decision to cancel production of the zero-emission supercar and will now push ahead with small-scale production two-seater, Autoweek can confirm. The decision is part of a number of sweeping changes made to Audi's research and engineering operations since the arrival of its new head, Ulrich Hackenberg. Citing recent advances in lithium-ion battery technology that has reportedly increased its range from an original 134 miles to close to 250 miles, high-ranking insiders at Audi's headquarters in Germany suggest the R8 e-tron will now go into limited production during the latter half of 2014.