Their “green vehicles” are charged with electricity from coal fired power plants, producing more CO2 than a gasoline powered car.
If you charge the car overnight especial midnight to 5 am, you are not really using anymore coal than if you did not plug in the car at all. Electric power stations create electricity all night long. And very little is used. Coal, Nuclear, and Hydro can’t be turned down at night so you the electricity is pumped back into the ground.
In the U.S. we make far more electricity than we use. Our electric capacity is for the hottest time on the hottest day of the year. The rest of the year and the rest of the hours of the day we are generally over producing.