When a major EV and battery expo takes place at the same time as EV charging station maker Ecotality files for bankruptcy, it’s a good question as to how much of the EV and hybrid vehicle industry is truly sustainable and how much exists solely to chase government incentives, but there is no question that it’s a substantial industry, even if, according to the most optimistic forecasts, cars and trucks with electric drive will never make up more than a fraction of annual sales.

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