That's actually far easier to do (if there's demand) than $15K EVs. For an auto manufacturer, very little cost: replace the gas tank with a CNG cylinder (cylind

That's actually far easier to do (if there's demand) than $15K EVs. For an auto manufacturer, very little cost: replace the gas tank with a CNG cylinder (cylinder can be manufactured cheaply if economies of scale are in place), use the piping able to withstand the pressure, use slightly different injectors. Done.