Automotive batteries and electric vehicles reduce the energy supply problem to electricity from power plants.
Burning fossil fuels (coal, natural gas, oil) in power plants produces CO2. CO2 is like water. You can drown in water, in which case it is harmful or you can drink it to sustain life. CO2 is necessary for the growth of plants, which is the basic nutrition form for all animals. However, assume for the moment that it is harmful, and we must not let any enter the atmosphere from fossil fuel burning.
Converting to electric vehicles requires more electricity from power plants.
New electricity sources could be fossil fuel burning, atomic energy, wind and solar. Each of these has a capital and operating cost per kilowatt hour.
The question is which source is cheaper and more reliable; fossil fuel burning with carbon dioxide capture, atomic energy with radioactive byproduct handling, wind with downtime (no wind), and solar with downtime (night).
The question can be resolved by appropriate engineering calculations, with consideration of some practical political needs.
In the absence of the calculations, I will estimate that fossil fuels with carbon dioxide capture would lead the pack. If we eventually decide that carbon dioxide is not the bad guy it is touted to be, there would be no question as to what is best.
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