My problems with electric vehicles are as follows:
by far the most important factor in efficient vehicles is weight and current battery technologies are all rather heavy (or the range is real wimpy)
Most battery technologies use toxic chemicals or at least dangerous chemicals in the event of an accident
Most battery types do not last very long so as far as a sustainable vehicle (one that will last decades or centuries instead of a few dozen months) the batteries are not a good choice for long term vehicle life.
You still need to make the electricity to charge the vehicle and current electrical grid systems are very inefficient and generally powered by burning fuels anyways... much more efficient to burn the fuel in the vehicle then far away from the charge site.
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