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Peugeot 207 Economique – the 99g car

The Peugeot 207 Economique - guess what its CO2 is?! As you may well have guessed, this is another car maker rolling out the usual low rolling resistance, lowered suspension, gear-change-light, steel wheels version of their regular runaround to create a car that magically dips below 100g/km CO2. Of course it’s completely disingenuous, because unless you drive like you’re carrying the last live eggs of the Dodo all the time you won’t get the CO2 levels quoted, and nor will you get the headline economy.

GM says natural-gas Chevrolet Impala on the way

General Motors said it will sell a version of the Chevrolet Impala sedan with the ability to switch between gasoline and natural gas, part of the automaker's plan for taking advantage of a U.S. drilling boom that has made natural gas a more viable fuel for cars. The dual-fuel Impala, to be announced today by CEO Dan Akerson at a conference here, will have one engine and two fuel tanks -- one for gasoline and one for compressed natural gas.

Concept Car of the Week: Lamborghini Marzal (1967)

In 1967, Lamborghini's lineup consisted of just two cars – the Miura and the 400 GT 2+2 – but this wasn't enough for Ferrucio Lamborghini, who fancied a true four-seater GT to add to his stable. After the successful collaboration on the Miura, he naturally returned to carrozeria Bertone which was commissioned to design the car. The project was left in the hands of Marcello Gandini, who turned Ferrucio's vision into a revolutionary design concept.