I spent 40 years doing business in developing countries in Asia and LatAm. Power supply there is erratic and expensive: Brazil, Mexico, India, Thailand, China, Burma, Bangladesh, Indonesia, Vietnam, Philippines.... all have large populations and suffer from blackouts, brownouts, power surges, you name it. I know for a fact that consistent and reliable power supply is a key consideration for investors. There is a huge opportunity for both Powerpack and Powerwall units in these markets. I sincerely hope that Tesla is exploring export sales opportunities not just in developed places like Western Europe, Canada, etc but also in the developing world where there is enormous demand.