Skyjacker Pitman Arm Sa40 on 2040-parts.com

Detroit auto show 2012 - a video review of the NAIAS

It's CAR's traditional three wise-ish men in a car video review of the 2012 North American International Auto Show. Hear the analysis from our European editor Georg Kacher, contributing editor Ben Oliver and anchorman associate editor Tim Pollard, as they chew over the new cars, surprises, delights and disappointments from the Detroit auto show. NAIAS 2012 was a more sober affair than the previous era of showmanship; there were no herds of cattle being steered down Detroit's streets or wild parties hosted by Chrysler in the old Firehouse.

BMW Z4 GT3 (2011) completes testing

BMW Motorsport has released pictures of its upgraded Z4 GT3 race car. The 2011 car has completed testing and is available for customer teams. BMW Z4 GT3: the lowdown The Z4 GT3 may look like a regular Z4 that's been attacked by a boy-racer with a carbonfibre and tea-tray rear wing fetish. But under the skin the Z4 GT3 ditches straight-six power for a 4.4-litre motorsport-tuned V8 engine, hooked up to a six-speed racing transmissionBMW Motorsport takes a regular Z4 coupe-cabriolet body shell, and removes the retractable hardtop, bonnet, bootlid, front and rear wings and the bumpers.

Watch the Audi Sport Quattro tear up the back roads

Audi revealed its 700-hp Sport Quattro concept at the Frankfurt motor show in September; the car pays homage to the classic rallying Sport Quattro from the 1980s. On Monday, the automaker uploaded a video of the upcoming vehicle to celebrate 100,000 Facebook likes on its German social-networking page. The video shows the Quattro whipping and gripping through a forest/mountain stage.