https://fortune.com/2015/04/27/gigafactory-obsolete/
A disruptive shadow looms over Tesla Motors’ giant Nevada “gigafactory”—the threat of rapidly advancing battery technology. While plenty of hurdles face new battery tech, the emergence of a viable and significantly better battery in the next five years could turn Tesla’s $5 billion facility for mass producing lithium-ion batteries into a giga-albatross…
https://painkills2.wordpress.com/2015/01/14/why-tesla-stock-is-plummeting-right-now/