If they nuked the hosts entirely, they would reveal which hosts were infected. This would show who their targets were, and potentially shed light on who they are. It would also reveal what data they had managed to steel.

-I must be missing something-

If you use an electric car - it needs to be recharged. That energy has to come from somewhere.. So instead of using a combustion engine, you are using energy from power plants, which usually means nuclear energy, or burning fossil fuels. - how does that help pollution?

The only benefit I can see is for urban areas, where you want to reduce the smog created from such a high concentration of vehicles - in which case you do not need a sportscar.

magli