Mark Anderson:

Tesla Motors, which this summer announced a partnership with Panasonic to build a battery “Gigafactory,” may be overreaching. A new industry analyst’s report questions whether the demand for the company’s electric cars will be big enough within the next five to eight years to warrant the factory’s projected $5 billion investment.
 According to the new report, by 2020 Tesla could be facing substantial overcapacity, with too many batteries and not enough EV cars — and other applications like renewable grid energy storage — to put them in.