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BMW reveals Concept M4 coupe at Pebble Beach

BMW's M division has previewed its upcoming M4 coupe with the unveiling of a near-production-ready concept of the new performance coupe at the annual Pebble Beach Concours in Monterey, Calif. The BMW Concept M4 provides a lightly veiled look at the eagerly anticipated M3 coupe replacement that is expected to make its public premiere in production guise at the Detroit auto show in January. North American sales will start before the second half of 2014.

Alfa Romeo Brera and Spider 1750 TBi and 2.0 JTDM (2010): first official pictures

By Tim Pollard First Official Pictures 17 May 2010 07:00 Alfa Romeo has fitted its new 200bhp 1750 TBi engine to the 2010 Brera coupé and Spider convertible ranges – alongside the 170bhp 2.0 JTDM diesel. We'd already seen both engines in the 159 compact executive model in 2009, but the new pair should broaden the appeal of Alfa's distinctive sports duo.Alfa's 1750 TBi: the tech lowdownThe TBi engine is a very zeitgeisty 1742cc four-cylinder, equipped with twin overhead cams running 16 valves, direct injection and turbocharging. This full book of tech is enough to liberate 200bhp and 236lb ft from just 1400rpm – not bad specific outputs for a 1.7.The new TBI engine will appeal to business drivers in particular, who will benefit from CO2 emissions of 189g/km in the Brera and 192g/km in the Spider.

Video: Autoweek tours the Tesla EV factory

Our own Mark Vaughn recently took a tour of the sprawling California plant where Tesla is gearing up to build as many as 20,000 electric cars per year. Formerly part of the General Motors/Toyota New United Motor Manufacturing Inc. joint venture, the vast space allows huge swaths of factory floor--all newly painted--between each of the machines.