I believe that GP is confused a little. In Europe (at least Cental and Eastern), the gas conversions of cars are mostly of the LPG variety. I haven't seen a gas

I believe that GP is confused a little. In Europe (at least Cental and Eastern), the gas conversions of cars are mostly of the LPG variety. I haven't seen a gas pump without LPG for a long time. I'm unaware of any CNG conversions around here, however.