General Motors is broadening its inventory of compressed natural gas (CNG) vehicles with the addition of two CNG passenger-van models for the 2014 model year. GM is also upgrading its two bi-fuel pickup lines for 2015. GM already has a CNG option available for its cargo vans and will now offer that option in the 2014 Chevrolet Express and GMC Savana passenger vans. Both of those models will have a roughly 200-mile driving range with a full tank of CNG. For the 2015 model year, both the Chevrolet Silverado and GMC Sierra will be available with a dual-tank feature that allows the driver ... Read More
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