This week, we learned two new things about the 2013 Cadillac XTS, the first being that it features a new capless fuel filler assembly and the other that General Motors has plans to build the full-size sedan in China for the domestic market. We will begin with the new capless fuel filler system that replaces the traditional twist-off cap, with Cadillac promising a cleaner and safer experience. “This new system has advantages for both the car and the driver,” said John Hamilton, Cadillac fuel fill systems design engineer. “It helps keep hands free of dirt and fuel, paint free of scratches caused by a swinging cap, and the engine running smoothly.” While other similar systems exist in the market, Cadillac has improved upon the idea by adding two doors instead of one. Each door locks fuel in with a rubber seal around its edge to help prevent leaks. The driver only has to open the outer door and insert the fuel nozzle directly through the twin doors. “Some capless systems on the market have just a single door, making them vulnerable to leaks,” said Hamilton. “Unlike competitors, Cadillac’s system also has no internal drain, something that can also lead to inadvertent dripping.” In addition to the news on the XTS’ fuel filler assembly, Cadillac announced at this week’s Beijing Auto Show that it will produce the Chinese-market version of the luxury sedan locally with its joint venture partner Shanghai General Motors (SGM). The XTS won’t be the first Cadillac to be built in China as that distinction belongs to the long-wheelbase SLS Executive Sedan that begun production in 2006. “China is the second-largest market for Cadillac, and of course is one of the largest and strongest markets in the world for luxury cars, so it is a core part of our vision as a brand,” said Don Butler, Cadillac vice president of marketing. “It is projected that by the end of the decade half of all luxury purchases in the world – all categories, not just cars – will occur in China.”