First GM announced it would import the Buick Envision from China to sell to US customers, and now the company's luxury car brand Cadillac will do the same with the CT6 Plug-In. It seems from this move that Chinese manufacturing has come a long way and no longer should have quite the same reputation for poor quality as it has in the past.
On a political economy level, China has just beat the US in this instance. Car sales in China are very strong and importation taxes are very high. This combination makes it so that companies' best option is to manufacture cars in China and then import them back into the US. Specifically with the CT6 Plug-In, China has strong incentives that make GM confident that China will buy more of the model than the US.
“That will be the largest market for electrified vehicles,” said GM President Dan Ammann. “The next generation of fuel-economy rules in China will be quite stringent at the end of this decade and into the next.”
The CT6 Plug-In hybrid will arrive in US showrooms in the first half of 2016 following the introduction of the non-hybrid CT6.