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Hmm, this says electric motors are from 80 to 90+ percent efficient with the power they are given, compared to 30 to 40% with gasoline engines. If batteries are inefficient, maybe our cars should be like slot cars, getting their power from the road.
Still don't think you can blame the electric motor for inefficiencies and pollution of generating power with gas and coal. There is Nuclear, Hydroelectric, Solar, Wind power, all of which would make electric cars clean and non polluting.
NEMA Design B Electrical Motors
Electrical motors constructed according NEMA Design B must meet the efficiencies below:
Power
(hp) Minimum Nominal Efficiency1)
1 - 4 78.8
5 - 9 84.0
10 - 19 85.5
20 - 49 88.5
50 - 99 90.2
100 - 124 91.7
> 125 92.4
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72 914 2056: 74 9146 2.2: 76 914 2.0
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