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Audi A3 Sportback e-tron price and specs – costs £34,950

Audi A3 Sportback e-tron (pictured) costs £34,950 If governments are going to base car taxation on Co2 emissions, then car makers are going to build cars that ‘game’ the official tests. A perfect example of which is the new Audi A3 Sportback e-tron plug-in hybrid. It’s expensive at £34,950 (although the government bribe for plug-ins does drop the price you pay to £29,950), but thanks to its ‘up to 31 miles’ range on battery power only it comes complete with official economy of 176.6 mpg and emissions of 37g/km.

Cadillac goes Skynet with Super Cruise system

Cadillac is road-testing a Super Cruise system that is capable of automatic steering, braking and lane centering during highway cruising. The first version of the system will be found on the ATS and XTS sedans. “Super Cruise has the potential to improve driver performance and enjoyment,” said Don Butler, vice president of Cadillac marketing.

Volkswagen XL1: Geneva Motor Show 2013

The VW XL1 is going in to limited production with the promise of 314mpg and a price tag likely to be £100,000. Surprisingly, one of those ‘Super’ cars is a Volkswagen that will cost £100,000 and has all the attributes of a supercar. Except its party trick is extreme performance in economy, rather than performance.