The answer is obvious.
America has total idiots in elected office.
Propane or LNG are “fluffy” fuels - ie, the density of energy in the fuel tank is much lower than gasoline. Gasoline is “fluffier” than diesel fuel, and so on.
Compressed NG is even worse.
So it isn’t an issue with the mileage, per se, it is a factor of the fuel caloric density.
they had to fill up multiple times during a shift
Where? Back in the 90’s I worked for a tuxedo delivery company that had reconverted vans back to gasoline after trying natural, guess some folks have no memory of the failures, and will continue to waste tax payers money
Don’t you guys get it? Throwing a bunch of taxpayer money at an unproductive, uneconomical venture that ALSO results in cops not being able to catch thugs is win-win for them.
Oh yeah those LNG cars are great. Cops have to fill them up 2 or 3 times per shift or run out of fuel. Genius!