Some interesting news, Tesla might already be looking for a European factory?
http://spectator.sme.sk/articles/view/55382/3/slovakia_in_talks_with_tesla_motors.html
I dont see how that would make any sense.
China should get the second factory.
reason:
1. The TTSIP inter Atlantic trade agreement will have free trade, so Tesla can just ship the Models from US to Europe.
2. China is the biggest market for Tesla outside of US, and its close to all the other soutasian markets. HK, Japan, Australia,
3. China offers huge incentives for manufacturers who produce in China.
But maybe I'm wrong and it makes more sense to build the second factory in Europe, with all the small eastern European countries, Tesla can use this competition to get the best incentives.
Same story as with the Gigafactory.
Slovakia largest car producer in the world | Visit Slovakia
really seems to be a good option for Tesla