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Infiniti-designed Santa's sleigh (2010)

Today's sleighs are courtesy of Infiniti. The design team in Japan have sketched out a couple of Infiniti sledges for Father Christmas to deliver his presents across the globe in imperious style. The first sleigh looks like an Essence supercar concept meets an FX crossover - from that long snout and high-mounted, wedgy headlamps to the complex, textured surfaces, sliced and diced by a laser-pointer's worth of sloping lines flying off at all sorts of angles.

Toyota Prius Plug-in Hybrid – details

The Toyota Prius Plug-in Hybrid will show at Frankfurt The principle difference between the standard Prius and this new plug-in version is – you’ll never guess – that it adds the ability to charge the Prius’ batteries through a domestic outlet. The Prius can be fully recharged in around 1.5 hours, and the new lithium-ion battery pack – which replaces the old nickel-metal hydride pack in the regular Prius – is more compact and of higher output. Toyota claim that the plug-in Prius can cover round 12.5 miles on a full charge in pure ‘Electric Mode’, which is around double that of the normal Prius.

Former Ford exec Theodore shows off lighter chassis at SAE

Automakers are facing tougher government regulations for fuel economy, and one former Ford and Chrysler executive says he has a solution Chris Theodore, best known for his work on the Ford GT and Dodge Viper, has designed a vehicle chassis that he says will provide automakers with weight savings, cut manufacturing costs and make electric vehicles more economically viable. Theodore is showcasing his proof-of-concept Uni-Chassis at the SAE World Congress this week. It uses the powertrain and suspension of the GT, under an agreement with Ford.