Gasmobil The Swiss company has created in collaboration with Fiat Group Automobiles Switzerland a special TwinAir 500C powered by methane, which will be offered in limited series for drivers after the launch in Geneva, Switzerland (3-13 March). In this version, the utility of Turin does not lose any of the canonical 85 hp, while emissions of carbon dioxide decreased to 72 grams per kilometer and the consumption is equal to 2.9 pounds of gas every hundred kilometers.