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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.

Autoweek in review: What you might have missed

The week started off well for BMW fans with the release of the redesigned 3-series wagon. The fifth-generation wagon is expected to reach the States in 2013. RM Monaco raked in more than $43 million in sales over the weekend.

New Alfa Romeo Giulietta Quadrifoglio Verde gets Alfa 4C engine

The new Alfa Giulietta & MiTo Cloverleaf Heading for Geneva next week will be a pair of updated range-toppers from Alfa Romeo – the Alfa Giulietta Quadrifoglio Verde and MiTo Quadrifoglio Verde – with the Giulietta the more interesting of the two. The engine in the new Alfa 4C is based on the engine in the current Alfa Giulietta, but now Alfa has decided the old 1750 TB engine in the Giulietta should make way for its new, lighter sibling from the 4C so the Giulietta will come with the same 1750 Turbo Petrol developing 237bhp and good for a 6.6 seconds 0-62mph sprint. Other tweaks for the Giulietta Quadrifoglio Verde include big tail pipes, 320mm Brembos, new bodykit, 18″ alloys, sports seats, leather and Alcantar trim, new instruments and a black roof.