It already is cheaper than diesel. Last time I was at a CNG station it was $1.41 cents for one gallon of diesel equivalent of natural gas.
LNG likely won't be cheaper as its so expensive to cool it to the temperature where it becomes a liquid. Compressing it is very cheap and simple by comparison.
CNG can be provided by the company if they have natural gas service and are willing to buy a CNG system since 1 million BTUs only costs around $3. That's the energy of about 7 gallons of diesel.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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