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New Mercedes SL 2012 finally unveiled officially

New Mercedes SL 2012 - finally it's official After two days of leaks on the new SL, Mercedes finally unveils the 2012 Mercedes-Benz SL officially. We’ve started each of the last two days with news of the new 2012 Mercedes SL. Tuesday saw a leak of a brochure scan of the new SL – so we had a clear idea of what was coming – and yesterday saw the arrival of a full gallery of photos of the new SL.

Tesla Model X

Tesla is set to expand its all-electric range with the introduction of the Model X. The crossover shares a large percentage of its architecture with the Model S sedan, including its chassis-mounted battery pack and axle-mounted drive units. The Model X retains a traditional two-box configuration, which continues the brand's strategy of producing EVs that, visually, are wholly conventional.

Future Audis may time traffic lights for you

Here's a trick efficiency-chasing hypermilers have been using for years: spotting the cycles of stoplights from 100 to 200 yards out and letting the car coast up to the light just before it turns green, then carrying on without ever letting the car come to a complete stop. These hypermilers, along with professional truck drivers, do this because they know that accelerating from a standstill burns the greatest amount of fuel, and because letting a car coast up to the light with the automatic transmission downshifting by itself is easier on the transmission than stomping on the brakes right beneath the stoplight. Oh, and it's easier on the brake pads as well.