UPS to consume $90 million more on natural-gas vehicles, fueling site.

Natural gas has not proven popular for vehicles bought by individual consumers, but some fleet operators continue to find it an attractive alternative to gasoline and diesel.That's because the lack of public fueling infrastructure proves a major drawback for natural-gas passenger cars, but fleets can circumvent that by operating their own centralized fueling stations.That's the case with UPS, which invested $100 million in natural-gas fueling stations and vehicles last year, and now plans to expand that program.DON'T MISS: Audi A5 is third model to run on natural gas, for Europe onlyThe company will spend an additional $90 million on compressed natural gas vehicles and stations, as well as liquefied natural gas vehicles.CNG remains in its gaseous form, while LNG is cooled until it liquefies.The denser LNG can be transported in tanker trucks, while CNG is generally transported by pipeline.UPS plans to add 390 CNG tractors and terminal trucks, as well as 50 LNG vehicles, as part of this latest initiative.It will also build six new CNG fueling stations, to be located in: Ontario, California, Orlando, Florida, Salina, Kansas, Louisville, Kentucky, Greensboro, North Carolina, and Vancouver, British Columbia, Canada.UPS currently operates 31 CNG fueling stations, spread across 15 states.ALSO SEE: Oklahoma claim: first state with natural-gas fueling on highways (Jul 2016)Its CNG vehicles operate in 38 states, as well as Germany, The Netherlands, and Thailand.The 50 new LNG vehicles will be deployed in Chicago, Indianapolis, Nashville, and Earth City, Missouri—all locations where UPS has existing LNG fueling stations.Some UPS fueling stations dispense renewable natural gas, also known as biomethane.