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UPS adds 48 more heavy-duty LNG tractor trucks to fleet; Westport HD System

Green Car Congress

Manufactured by Kenworth, the LNG tractors are powered by Westport HD Systems and initially will pull trailers on a transit lane linking Ontario, Calif., These LNGs are expected to produce 25% fewer greenhouse gas emissions compared to the older trucks and use 95% less diesel fuel than the vehicles they replace. and Las Vegas, Nev.,

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Kenworth and Peterbilt to add heavy-duty Cummins Westport ISX12 G to line of natural gas engines

Green Car Congress

Kenworth Truck Company and Peterbilt Motor Company will expanding their alternative fuel line-up by offering the Cummins Westport ISX12 G heavy duty natural gas engine ( earlier post ) for use in regional haul, vocational and refuse markets. —Michelle Harry, Kenworth natural gas vehicle marketing manager.

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