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
Electric motors could be restricted to lighter vehicles such as compact cars, which have smaller batteries and ttherefore require less power to charge than do the larger batteries needed to power larger vehicles.