Chevrolet is bringing CNG power to the Silverado HD

Chevrolet is taking CNG-powered vehicles seriously, with so many of their trucks being used in commercial fleets, so it was perhaps no surprise that we'd see a version of the 2015 Silverado HD that can be run either on gasoline or compressed natural gas before long. Chevrolet brought the 2015 Silverado 2500 HD CNG to the Chicago Auto Show, to let prospective buyers as well as the media to learn about at the savings that could be realized with this environmentally friendly setup. The HD CNG truck will offer bi-fuel capability coupled with its 6.0-liter V8 engine that's been modified with hardened valves and valve seats to run on compressed natural gas.

2013 Audi A6 Allroad unveiled

2013 Audi A6 Allroad revealed Audi are busy showing off the new A4 Allroad at the Detroit Auto Show, but this morning they have revealed its big brother – the 2013 Audi A6 Allroad in Germany. Audi has only just launched the 2012 A4 Allroad – which is on show at the Detroit Auto Show as we write – but they’ve already got its big brother ready to show – the 2013 Audi A6 Allroad. Audi has taken the usual Allroad recipe for the A6 by taking the basics of the A6 Avant and making it rufty-tufy and ready for the urban jungle.

Electric cars can become electricity banks

Ever try to store electricity? It won't stay in a bottle, and you can't keep it in your sock drawer. So when you have a lot of it--say, when it's windy and your wind turbines are really spinning, or when it's sunny and your gallium arsenide photovoltaics are lighting up, or at night when the utility's generators can run unhindered--you have to store it somewhere.