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GM unveils electric Cadillac Converj concept at the Detroit auto show

General Motors pulled perhaps a surprise at the Detroit Auto Show Sunday morning, unveiling an eye-catching two-door Cadillac concept powered by a "future evolution" of the Chevrolet Volt's electric powertrain. Called the Converj, the Cadillac will have a range of 40 miles on electricity, with a potential total range of 700 miles after a generator kicks in. GM says the powertrain, formerly known as E-Flex, is now called Voltec, and could be used in a variety of applications.

2013 Rolls Royce Ghost updates

Three years on from the launch of a Rolls Royce for owner drivers – the RR Ghost – Rolls Royce has made some updates for 2013. Believe it or not, it’s three years since the Rolls Royce Ghost arrived at the 2009 Frankfurt Motor Show as a more ‘Sporty’ take on the RR ethos and aimed at owner-drivers; the sort of chap who’s outgrown big Mercedes and BMW but still likes to drive. Three years on from launch, we’re still waiting for RR to deliver a Ghost Coupe (perhaps the Corniche?) and a Ghost DHC, so when we saw an email from Rolls Royce with 2013 updates we got quite excited.

Driven: BMW i8

When BMW unveiled the Vision EfficientDynamics concept at the 2009 Frankfurt motor show, we wrote: "for our money, it's the first time a major carmaker has really attempted to communicate ‘green' technology in an aesthetic sense." Fast-forward five years and we've swapped the show halls of the IAA for a beauty spot on the north-west coast of Scotland. And, while the car's name has changed to i8, our sentiment towards this genre- and era-defining car remains. Admittedly the production car's design execution hasn't received the universal praise of its concept forebears, but, on a remote outpost of the British Isles, a Protonic Blue i8 couldn't look more exotic.