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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.

Honda readies its jet airplane -- for real this time

Honda would like to remind you that while journalists have spent the last few years fretting whether the Big H has "lost its way," the company has quietly launched, shelved, resurrected, and all but waited out its plan to dominate the business-jet skies, which we are to assume are less friendly than United's. The HA-420 HondaJet has been kicking around for more than 10 years now, but the very first production-ready plane just rolled off the assembly line in Greensboro, N.C., this week -- and, Honda promises, the $4.5 million business jet should be delivered in the second quarter of next year. Honda began taking orders for the jet in 2006, but the long recession squashed the market for private jets.

New 2013 Porsche 911 Turbo & Turbo S revealed: UPDATED with Video

This time there’s no waiting for the Turbo S to follow the Turbo, with both models on offer straight out of the gate. The 911 Turbo gets the 3.8 litre flat six with 513bhp and the Turbo S gets an even more fulsome 552bhp, enough to get to 62mph in just 3.1 seconds and on to 198mph. And, with its four wheel drive, it’ll feel even quicker in the real world.