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Frankfurt motor show 2011: the A-Z guide

Click here for Gavin Greens Frankfurt motor show blog The Frankfurt motor show is in full swing on Tuesday 13 September and CAR has a team of reporters bringing you the news, new car launches and gossip from the IAA. Come back here over the next 48 hours for our handy A-Z list of all the important new cars at Frankfurt - click through on the links below for the pictures, galleries, news and analysis on each launch. And follow Ben Barry's Live Blog here, as he tries to see every car at the Frankfurt auto show.

Washington auto show: Ford develops ‘intelligent cars'

There are plenty of smartphones, and now Ford is pitching the idea of “intelligent cars” that can communicate with each other to avoid accidents. Ford is investing heavily into the technology and will launch a fleet of prototypes this spring, the company said on Thursday at the Washington auto show. The idea is to use wireless signals on a secured channel to allow cars to communicate with each other.

New BMW M3 and M4 engine secrets laid bare

BMW's M division has lifted the veil of secrecy on the inline six-cylinder engine bound for its upcoming M3 sedan and new-to-the-range M4 coupe and convertible, revealing a potent twin-turbocharged 3.0-liter direct injection gasoline unit that produces an official 424 hp at 7,500 rpm and what officials describe as "significantly more than 369 lb-ft" of torque. The newly developed engine, known under the internal codename S55 B30, shares its 84.0 mm bore and 89.6 mm stroke with BMW's standard turbocharged 3.0-liter in-line six-cylinder direct-injection gasoline mill, the M55 used across the German car maker's lineup, endowing the aluminum block unit with an overall swept volume of 2,979 cc. This represents a sizeable 990 cc reduction on the engine BMW's M division's new unit replaces, the S65.