The CT6, which goes on sale in the fourth quarter of 2015, will be built at the Detroit-Hamtramck Assembly plant, using a unique combination of joining techniques, a first for any General Motors’ model. A new body shop with new tooling and advanced technologies – including 205 robots – has been added to the plant. The fully automated, roughly 138,000-square-foot shop is dedicated to the manufacturing of the high-end luxury sedan.