The Bugatti 16 C Galibier was introduced as a concept in September of 2009, and since then it has been the subject of on-and-off production rumors. The super-sedan is a four-door that would find a rather empty field in the million-dollar + sedan market.

Bloomberg reports this week that Bugatti is indeed prepared to produce the stunning four-door. According to the report, the sedan has been approved by Bugatti's parent company Volkswagen and is being scheduled for a 2013 or 2014 launch.

In its concept form, the 16 C Galibier was an exercise in power meets fine design. The car used Bugatti's 8.0-liter W16 engine. In place of quad turbos on the Veyron, the 16C used two-stage supercharging to put out somewhere between 800-hp and 1,000-hp. As in the Veyron, that power found its way to all four wheels.

While the sedan packed more brute engine force than any family is likely to put to use, it promised to keep them comfortable with a lavishly appointed, intricately detailed interior with such elements as rich leather and wood appointments and a wristwatch/clock from Swiss watchmaker Parmigiani.

The 16 C was equally exquisite on the outside, pairing polished aluminum with blue carbon fiber-reinforced plastic. The front-end was quite similar to the Veyron, but the Galibier's flattened hood and fastback cabin distinguished it from Bugatti's coupe.

Bloomberg speculates that the 16 C will be priced in the million-euro ($1.4 million) range when it hits the market, making even ultra-premium sedans from the likes of Bentley and Rolls Royce look rather cheap. Bloomberg's report did not speculate as to whether the 16 C Galibier will replace the Veyron or be sold side-by-side with the fastest production car in the world. Either way, if the 16 C comes to market, Bugatti will make a compelling case for the "most exclusive, elegant and  powerful sedan in the world."