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BMW Z4 sDrive 35is (2009) at Detroit motor show 2010

These are the first official pictures of the new high-performance BMW Z4 sDrive 35is, unveiled today at the Detroit motor show. A bit of a mouthful (that's BMW's new nomenclature for you), but it's essentially the fastest, hardest Z4 to date since the recently departed M roadster curled over and died.The Z4 sDrive 35is uses Munich's existing 3.0-litre twin-turbo straight six, tweaked to produce 335bhp and 332lb ft of the twisty stuff all the way from 1400-4500rpm. That's one flat torque curve, and a 29bhp jump over the regular sDrive35i.

Audi R8 e-tron – cruising in California video

We have video of the Audi R8 e-tron cruising the Pacific Coast Highway Audi first revealed its electric car project at the Frankfurt Motor Show in September last year with the R8 e-tron, an electric car based on the R8 and featuring four electric motors creating a quattro EV. Audi then went on to reveal their second e-tron at the Detroit Motor Show – the Audi R4 e-tron – which seems to preview a new R4 model from Audi and finally the latest – and most convincing e-tron – the Audi A1 e-tron at the Geneva Motor Show last week. But so far we’ve not seen any of the e-trons on the move.

Nissan IDx concepts tour Cali

Having traveled from the Tokyo motor show to the Detroit auto show, Nissan's Datsun-inspired IDx concepts are on to much warmer weather. The upcoming three-day tour, starting Jan. 31, will begin in Venice, Calif., on Abbot Kinney Boulevard.