From the discovery of fire to the microchip, every technology humanity has developed has had an environmental impact. The same is true for the electrification of transport. Just because battery-powered cars are smoke-free does not mean they have no consequences.
The thought hit home when this ENDS writer was almost hit by a barely audible zero-emission van at an electric vehicle (EV) show in February. Noise is one of the internal combustion engine’s major downsides, but it does, at least, alert pedestrians.