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Meet the 214-mpg Volkswagen Twin-Up concept

Ahead of a Tokyo motor show debut, VW is showing off the Twin-Up concept. Essentially an advanced version of the company's entry-level Up supermini, the Twin-Up runs a modified version of the plug-in diesel-electric hybrid driveline used in the high-tech XL1 for spectacular claimed combined consumption of 214 mpg on the Euro combined cycle along with a zero-emissions electric range of 31 miles. The Twin-Up name alludes to the new car's twin drive sources.

CDN–GM Interactive Design Competition winners announced at NAIAS

The winners of the CDN–GM Interactive Design Competition have been announced at the North American International Auto Show (NAIAS) in Detroit. Following a guided tour of the auto show with the GM design team, the finalists gathered on the GMC stand in Cobo Hall where Mark Adams and Ken Parkinson – heads of design for Cadillac & Buick, and Chevrolet & GMC respectively – were joined by Car Design News' Editor Owen Ready to present the winners of each brand's competition brief. Joining them on stage were the mentors from GM's design teams who interacted with the entrants throughout the competition to critique and help develop their work, making this a truly unique contest.

America trialling solar-powered roads

Solar Roadways After glow-in-the-dark road markings proved to be a bit of a flop when the paint washed away in the rain, experts are now experimenting with solar-powered motorways. A small, family-owned American company based in Idaho called Solar Roadways has created a short section of road that uses the sun’s energy to power nearby buildings, as well as electric cars. If the solar-powered roads are adopted worldwide, it could put an end to the range-anxiety commonly associated with electric vehicles.