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I used to work on natural gas vehicles. The problem with natural gas is the need for the tanks which must withstandAlways felt hydrogen is the way to go, after natural gas. Up in Minnesota on a route to S Dakota, NG is available all the way, aimed at big rigs. Quick Way, I believe, is the gas chain with the natural gas access. GM is working with Autocar on hydrogen trucks.
2200 psi and even the fiberglass ones, though not AS heavy, take up much space and even so the range is very limited.
We had NG pickup trucks and the beds were full of the tanks hence no cargo capacity and range was still very short.
They tried stacking 3 tanks vertically behind the cab or placing two along the frame rails.
Let me just say this. Nipsco gave up on them around 15 years ago and removed all their refueling stations. There's
a hint.
edit: Gas turbine generators for electricity make sense because a pipeline is ran to them.