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Win a copy of Hans Mezger’s Porsche autobiography

Click here to win a copy of Hans Mezger's book. The new March 2012 issue of CAR Magazine features a 35-page Porsche special, led by our exclusive first ride in the new Boxster S. There’s also a 1400-mile American road trip in the latest Porsche 911, everything you need to know about the £645k 918 Spyder hybrid supercar, and your guide to buying the best used Porsches.

Ford Energi drivers use all-electric mode 60 percent of the time

Ford has noticed quite a few interesting things by researching how owners use their Ford plug-in hybrids. It appears that Ford owners are driving their hybrids in electric mode nearly 60 percent of the time, using their cars' 21 miles of gas-free all-electric range. This figure contrasts quite a bit with the 41 percent of all-electric drive time earlier in the year, demonstrating that winter driving patterns differ quite a bit from summer driving.

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.