Chevrolet Camaro Convertible (2011) first pictures

Chevrolet has shown its new Camaro Convertible ahead of the Los Angeles auto show tomorrow. No great shakes: it takes the stylish coupe and chops the top. There's a 308bhp V6 or the 420bhp V8, and prices kick off around $30,000.

Porsche approves the Cajun, a junior 4x4

Porsche's supervisory board today confirmed it would build the Cajun, a junior SUV to slot beneath the Cayenne in its range. The announcement from Stuttgart confirmed the 'working name' Cajun and said the new model would increase growth. Critics will surely say that the Cajun represents yet another move away from Porsche's sports car roots, but don't forget the effect that Cayenne sales have had on the company's balance sheets.

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.