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Watch the Porsche 911 GT3 rear-steering system work

A handful of manufacturers have offered four-wheel steering in the past including Honda, Nissan, BMW, Mitsubishi, Mazda and, most recently, Acura and Porsche. On Monday, suspension expert Elephant Racing uploaded a video to its YouTube channel demonstrating the feature on the 2014 Porsche 911 GT3. In most four-wheel steering cars--Acura and Porsche included—a computer controls the movable rear wheels.

Tesla, Chrysler take federal loan payment dispute public

Tesla CEO Elon Musk took to Twitter Thursday to respond to Chrysler's barb that Tesla wasn't the first American automaker to repay the U.S. government for aid. Tesla, which paid off the remaining $451.8 million on its 2010 Department of Energy loan Wednesday, received $465 million under the highly politicized Advanced Technology Vehicle Manufacturing loan program.

Cadillac CTS

By Ben Oliver Motor Shows 09 January 2007 04:39 New CTS: no mistaking this for anything other than a Cadillac The all-new CTS compact exec saloon is Caddy's big news from the Detroit show, and they were never going to muck about with a distinctive design direction that has won them praise and younger customers since it began in 2001. The new CTS exaggerates it further with yet-more vertical lamps and grille, plus plenty of bling, using chrome for the air vents, window surrounds, the three-inch exhaust tips and 18-inch rims. No high-performance V version of the new car has been announced yet, but until it arrives the range will be led by a new direct-injection, 3.6-litre V6 with variable valve timing putting out 300bhp and 270lb ft.