Natural gas and electric
Frito Lay is testing all-electric trucks, such as this one on the right, and natural-gas-powered long-haul trucks. The company got into alternative fuels with its fleets because it had a corporate goal of reducing oil imports and greenhouse gas emissions. Electric transportation has far cheaper fuel costs, but there are limits in the range of today's batteries. Natural-gas fuel costs are lower, too, though costs vary substantially in different parts of the country. Natural gas, though, has comparable driving range as diesel tractors with far lower emissions. Behind the truck cab, you can see where the natural-gas tanks are stored. The dearth of fueling stations is still a barrier to natural gas for long-haul vehicles.
September 20, 2011 10:55 AM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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