Henry: Engines powered by electricity from batteries cause less pollution than internal combustion engines  Ttherefore, to reduce urban pollution, we should replace standard automobiles with battery-powered vehicles  Umit: I disagree  Battery-powered vehicles have very short ranges and must be recharged often
Their widespread use would create a greater demand for electricity generated by power plants, which are themselves a major source of pollution
The increased air pollution resulting from a greater demand for electricity would be offset by the reduction in air pollution emitted by electric vehicles.