With a present share of biofuel used in the Swedish road transport sector of 5.2%, the opportunity for reaching the binding target of 10% by 2020 seem promising. It is both likely and desirable that biogas vehicles may make a significant contribution to fulfill Sweden's obligation under the biofuels directive. It is likely because the stock of biogas (bi-fuel/CNG) vehicles in Sweden is increasing, as is the supply and demand of biogas. It is desirable, because biogas use in the road transport sector has not only climate benefits, but also benefits from an environmental (e.g. improved air quality due to lower emissions of regulated and unregulated air pollutants) and socio-economic (e.g. domestic production, employment) point of view.