E-fuels exempted from EU's 2035 ban on combustion-engine cars.

The European Union's plan to eliminate carbon dioxide emissions from new cars and vans by 2035 has been weakened by an exemption for internal combustion engine (ICE) cars that use synthetic e-fuels. E-fuels are a synthetic alternative that can be made from air and water using electricity, but they are costly and inefficient. While running on e-fuel instead of gasoline might reduce carbon dioxide emissions, some experts worry that making room for e-fuels within plans to transition to clean energy only keeps more gas-guzzling cars on the road.