We already know that 84% of new buses will be electric by 2030, which should bode well for inner city air quality. But—just like electric cars—the emissions produced in the generation of electricity need to be taken into account too.
Of course, anyone who has followed the Union of Concerned Scientists (UCS) work on quantifying the benefits of electric cars will likely know that the “long tailpipe” argument only goes so far. Electric cars are greener than gas, literally everywhere.