2013 Chevrolet Silverado 2500 Ltz on 2040-cars

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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 claims it's first to sell million 30+ mpg vehicles

As we continue to put together all the data for the year-end edition of By The Numbers, General Motors has announced that it sold more than a million vehicles in the US last year that achieved at least 30 miles per gallon on the highway. More impressively, GM managed this feat using multiple strategies including small vehicle size, turbocharged engines and hybrid or plug-in technologies across four brands (Buick, Cadillac, Chevrolet and GMC) accounting for 13 separate models. This number will grow even more in 2013 thanks to cars like the all-electric Spark, the diesel Cruze, the range-extended Cadillac ELR and the Buick Encore compact CUV.
GM's small car sales were up 39 percent last year helping to attain this million-sales mark for 30-mpg models, and almost 40 percent of all GM sales consisted of cars with fuel-efficient I4 engines. In regards to more advanced means of improving fuel economy, GM says that it plans on having 500,000 vehicles with "some form of electrification" on the road by 2017.
Scroll down for the full list of GM's million 30+ mpg cars as well as an informative press release.

Dodge vs. Chevy tug-of-war taken to the extreme

They say "idle hands are the devil's playground," but said playgrounds grow to Disney-sized proportions when a pair of jacked-up trucks, two egos, a chain and an empty mall parking lot are involved. Proof of this is the video below, which shows a Cummins-powered Dodge Ram circa 2006 to 2008 chained tail-to-tail with what looks to be a gasoline-powered Chevrolet Silverado from the late 1990s or early 2000s.
We don't necessarily have to tell you who wins this battle, but we'll let you see for yourself the lengths the "winning" driver goes to prove his point. There's plenty of foul language in the video below, so beware that this might be Not Safe For Work, and not that we should have to tell you, but please, do not try this at home.