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Watch how Corvette Racing's new collision-avoidance radar system works

When it comes to technology used in racecars, we generally expect it to trickle down to production cars, not the other way around. Well, Pratt & Miller has developed a new rear-facing radar that operates in a similar fashion to what we're used to in modern blind spot detection systems, only it is also capable of tracking cars as they approach and relaying vital information to the driver via a large display screen.
The innovative radar system debuted at last weekend's 12 Hours of Sebring for Corvette Racing, and this system makes perfect sense for endurance races like this since the cars sometimes have to drive through the night and in poor weather conditions.
The radar can detect cars even with poor visibility, and uses easy-to-distinguish symbols for the driver to identify.

GM wants to have 10 plug-in models in China in five years

Last we checked, General Motors was selling all of three plug-in vehicle models in its home country of the US, and is prepared to make the Chevrolet Bolt EV available on these shores later this year. So it's notable that the automaker is hatching plans to have at least 10 plug-in variants for sale in China within the next five years, according to Hybrid Cars. Which plug-ins are coming remains a mystery. GM started selling a hybrid version of the Buick LaCrosse in China this month. The strategy makes sense, as China is now the world's largest car market, and accounts for about a third of GM's annual revenue. The automaker, which operates in China under the SAIC-GM and SAIC-GM-Wuling joint ventures, sells cars there under the Chevrolet, Buick, Cadillac, and Boujun badges, and has been doing so for the better part of two decades. Most recently, GM started selling a hybrid version of the Buick LaCrosse in China this month. What we do know is that GM is building its Cadillac CT6 Plug-in Hybrid in China, with distribution to be split between China and the US. That model, which is scheduled to start sales by the end of the year, is being built overseas because of a combination of Chinese government support for new-energy vehicle technology through incentives and the fact that battery-pack maker LG Chem makes most of its cells in nearby South Korea. The plug-ins are part of a broader plan by General Motors to either introduce or substantially tweak about 60 models by the end of the decade. With such new models, GM looks to boost unit sales by as much as five percent a year for the next few years. As for the other nine plug-in models slated for China by 2021, the company is mum. GM spokesman Dan Flores declined to comment to AutoblogGreen. Related Video: Featured Gallery 2016 Cadillac CT6: First Drive View 32 Photos News Source: Hybrid Cars Green Cadillac Chevrolet GM Electric Hybrid PHEV

Chevy Volt 'acceptable,' Nissan Leaf 'poor' in new IIHS safety tests

Ford C-Max Hybrid also scored "acceptable" rating. With US Nissan Leaf sales up almost 30 percent during the first half of the year, the only thing that might be able to stop the battery-electric vehicle is a good, stiff barrier. Unfortunately, thing's aren't always pretty when that happens in the real world, according to new tests from the Insurance Institute for Highway Safety (IIHS). Things with the Chevrolet Volt extended-range plug-in are a little bit rosier, though. The two plug-in vehicles were part of a batch of a dozen vehicles that just went through the IIHS's "small overlap" test, in which the driver's side front corner of the vehicle is crashed into a rigid barrier at 40 miles per hour. Out of the dozen, only the Mini Cooper Countryman was given a "good" rating. Five vehicles, including the Volt and the Ford C-Max Hybrid, were rated "acceptable," two were "marginal" and two, including the Leaf, were "poor." Plug-in vehicles are unique in the crash-test context because of their relatively large battery sizes. In the Volt's case, the driver had a "low risk" of injury, said the IIHS. But the Leaf's crash substantially pushed back the instrument panel and steering column, creating a scenario where the driver was "likely" to sustain leg injuries. The batteries in both the Leaf and the Volt passed safety tests specifically targeted at things like thermo and electrical properties and overall integrity. "Nissan is proud of the Leaf's 'Good' rating in all other IIHS tests, a 4-star NCAP rating from NHTSA and its IIHS Top Safety Pick rating in all previous years since the car's release," the company said in an e-mail sent to AutoblogGreen. "As for the performance of the 2014 Leaf in the 'small overlap frontal test,' Nissan will continue to review these and other results from the IIHS 'small overlap frontal test' as we seek opportunities for improvement." Check out the IIHS's press release and small car crash-test video footage below. Range of ratings: Small car ratings run the gamut in challenging small overlap front test The Mini Cooper Countryman is the only small car to earn a good rating among the latest group of 12 cars subjected to the Institute's small overlap front crash test. Two electric models and a hybrid also are in the mix, with varied results. The electric-powered Chevrolet Volt (with a gasoline engine "range extender") earns an acceptable rating, while its battery-electric rival, the Nissan Leaf, earns a poor rating.