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Chevrolet Volt a step closer to full power with preproduction cars

The Chevrolet Volt is nearing full power as preproduction cars are now prowling the roads around the General Motors Tech Center in suburban Detroit. These units show us what the real-world Volt looks like and bring together the final body, interior, electric powertrain and software for the first time. Some small details are lacking, such as the graining of the interior trim.

New Volvo C30 introduced +Video

Volvo has facelifted the C30 for 2010 and will launch it at Frankfurt The front of the new C30 sports sheet metal changes to the wings and bonnet and a bigger Volvo badge on the honeycomb grill, together with bigger air intake. These changes reflect those seen on the new Volvo C70 and are a reflection of design cues from the S60 Concept. The rear gets a tweak too, and you now get a colour-coded rear valence, which can be specified in a contrast colour if you wish.

Tomorrow’s world: Fiat's MultiAir engine tech

By Jesse Crosse Motor Industry 14 October 2009 16:50 Fiat this year launches what it claims is a big step forward in variable valve timing: MultiAir. It's the first time that a manufacturer has made a properly variable valve system a production reality, and will slowly be rolled out across most of Fiat's and Alfa's car ranges.How does Fiat's MultiAir vary from existing variable valve timing (VVT) systems?Current VVT systems rely on mechanical systems to open and close the valves. Engineers have long understood the benefits of changing valve opening and closing times to tweak an engine's power and emissions performance, depending on the need for power or parsimony.Valves are an engine's nose and mouth – it inhales through inlet valves and exhales through exhaust valves.