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"By hardening the valves and valve seats of the company&amp;#039;s workhorse 6.0L V8, Chevrolet has created a Clydesdale that&amp;#039;s a little easier on the ol&amp;#039; feedbag, and a little bit gassier. Revealed here this week in Chicago, the company&amp;#039;s Bi-Fuel Silverado 2500HD and 3500HD are capable of running on either ordinary gasoline, or Compressed Natural Gas (CNG).  The advantages to CNG power are mutlifold: it&amp;#039;s cleaner burning than gasoline or diesel, it&amp;#039;s considerably cheaper, and adding a CNG tank brings the total range of the heavy duty Silverado up to 650 miles. The default is to run on gasoline power, deploying all 360 hp and 380 lb/ft of torque, while switching over to CNG seeing a loss of 59 hp and 47 lb/ft. The slight reduction in grunt won&amp;#039;t be a problem on the flat or under light loads, and the fuel savings over an entire fleet of vehicles is considerable. Companies such as FedEx, UPS, and AT&amp;amp;amp;T, and many municipalities already run CNG in many of their vehicles, and the Bi-Fuel Silverados let Chevy compete with Ford for some of that fleet business. READ THIS: 5 things I learned driving the 2015 GMC Sierra Denali 2500 GM hasn&amp;#039;t announced pricing or availability, but in the 2014 models, the Bi-Fuel option would set you back $11,000. With Ford&amp;#039;s CNG heavy-duty offerings now slightly undercutting this premium, Chevy may choose to price their gassy Silverado a little more aggressively. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.roadandtrack.com/car-shows/chicago-auto-show/news/a6964/2015-silverado-bi-fuel-heavy-duty-chicago/>