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.

Fiat unveils new 900cc TwinAir two-cylinder engine

Fiats of old used to feature noisy two-cylinders with a fetish for overheating, yet the Italians are at it again, this week releasing details of their new TwinAir two-cylinder 900cc engines. You can see how it works in our video below. The new engines, the first in a series of two-cylinders by the Italians, are designed to trump all other downsizing efforts. Headline figures from the 83bhp twin are 23% more power than the regular 1.2 four-pot and the same as a 1.4 16v - yet with 30% less consumption.

McLaren Automotive launches bespoke operations division

McLaren Automotive has today announced the launch of the McLaren Special Operations division, which will be responsible for the delivery of bespoke projects for McLaren sports cars. The division celebrated its launch with an example of the new MP4-12C, finished in Volcano Orange with a number of bespoke carbon upgrades, at the 2011 Pebble Beach Concours d'Elegance. Bespoke designs featuring on the vehicle are diamond cut finish wheels with gloss black inners, MP4-12C branded carbon sill panels, a carbon steering wheel, front wheelarch louvres and carbon fiber engine cover vents, rear deck vent and wiper system cover.