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.

Motown rockers Dale Earnhardt Jr. Jr. serve up Horse Power

NASCAR fans looking for a new soundtrack to their auto-racing season can trade in their Lynyrd Skynyrd records for an offering from Detroit-based indie-pop duo Dale Earnhardt Jr. Jr. In a nod to their Motor City roots, band members Josh Epstein and Daniel Zott take the stage wearing racing suits and trucker hats and croon covers of Gil Scott-Heron's “We Almost Lost Detroit.” The band, which is touring the East Coast this week, released an EP titled Horse Power last summer and is coming out with its first full-length album, It's a Corporate World, on June 7.

New pictures: Audi A2 concept

Audi is set to give its A2 concept a public debut alongside its Urban concept at this year's Frankfurt motor show in the manufacturer's latest exploration of electric mobility. The A2 concept study revolves around the concept of space, with the vehicle having been developed with plenty of room for four people even with the car being 3800mm long, 1690mm wide and 1490mm high. The car is very much designed to impress aesthetically as well as improving the company's green credentials.