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The 15 most significant cars of the 2011 Frankfurt motor show

Over 100 new cars were unveiled at the 2011 Frankfurt motor show, but which are the most important? From production cars to concepts that will never be built, CAR's road test editor Ben Pulman, decides on the 15 most significant models premiered at the IAA...  1 – Land Rover DC100 concept Chunky and funky, it’s Land Rover’s Evoque, the Defender urbanised, modernised and stylised for the 21st century. Range Rovers have become too ‘bling’, but the DC100 has the restrained elegance of the Disco 3 – we’ll ignore its bright yellow sister, the speedster-style DC100 Sport.

2012 Buick Regal GS rated at 270 hp

This is a heady title: highest specific output of a General Motors production engine. Ever. Better than any Corvette, Cadillac or Camaro or anything else GM has produced in the last century.

Hertz to rent EVs in San Francisco

Car-rental company Hertz has added electric vehicles to its fleet in San Francisco, available to members of the Hertz On Demand program. Renters can choose from the Nissan Leaf, the Smart EV or the Mitsubishi "i". Rentals include an in-car connection to the 24-hour member care center, where drivers can get information on charging stations, alternate drop-off points or roadside assistance.