Add Fuel Gas Vehicles

It would be very cool if we had vehicles running on fuel gas! These could use regular fuel stations rather than the dedicated hydrogen fuel stations (better yet, T2/T3 fuel stations could have the option to supply two different fuels ie diesel and/or fuel gas, just like T2 food markets). I would love this as an in-between option as to not immediately jump from expensive but simple diesel into more complicated hydrogen. Fuel gas could be less polluting and a bit more fuel efficient than diesel. Just my two cents.

Might be worth note: Standard fuel station uses Diesel, which is a liquid fuel. Fuel gas is, based on production processes, methane- which is naturally a gas, and would therefore require the same high-pressure gas filler system as would likely be found on the Hydrogen Fuel Station.

I don't think we need fuel gas vehicles - you can turn fuel gas into hydrogen or diesel easily. Why converting from diesel to fuel gas when you can go directly for hydrogen?

Still can be made into a mod.