This is truly an innovative addition to the Rails ecosystem. I'm learning Rails and Prelang offers a great way to read code that's written with best practices in mind. All the best!
The idea of a company the size of Foxconn fleeing China isn't believable. Government regulations, tax structure and cost considerations determine business decision making. And, that's exactly why China's thriving right now. A decade from another low cost center will spring itself up and without doubt businesses will throng that destination.
It for sure makes a great negotiating tactic to extract maximum leniency from the Chinese Govt. Besides, Foxconn is one of the poster boys for Chinese manufacturing might and the Govt. won't let them shut shop over night. It's just bad PR!