Are you a luxury automaker that wants to take a pricey sports car and tack on a zero at the end of an MSRP? Try building a limited edition special! It's worked wonders for Ferrari, with each new one-off project commanding more substantial premiums. BMW is the latest automaker that wants to cater to the ultra-elite with a super-limited homage to its 3.0 CSL. The project will be loosely based on the 2015 concept car, underpinned by the BMW M4 CSL.

BMW just officially announced the project yesterday, but our spy photographers have already spotted a prototype out testing near the Nurburgring, and video footage has been captured of the car tackling the Green Hell. The Bavarian automaker must be anxious to start raking in almost $800,000 per car. With 50 units marked for production, BMW stands to make $40,000,000 from one limited edition car. BMW would have to sell around 500 standard M4s to make that same amount.

The test mule seems like the same car from the teaser, but these spy shots give us a better idea of what it will look like outside in the real world. We can clearly spot some of the retro throwbacks to the original CSL, including the double rear wing. Though it clearly shares a body structure with the M4, this car has unique headlights and taillights, smaller kidney grilles, and other distinct changes.

With these spy shots, we can also get a closer look at BMW's interesting livery, which features images of past and current M products. There are several tag lines scattered around the car, but the most notable is "6MT FTW," hinting that this car will come with a six-speed manual transmission rather than an automatic.

The car's official name is still unknown, but in celebrating such a special model, BMW is likely to revive its name, so expect BMW 3.0 CSL or some derivative thereof. It will almost certainly use the same S58 twin-turbocharged inline-six engine found in other M4 models driving the rear wheels only. The recently-revealed M4 CSL produces 543 horsepower, so we expect this limited edition to outmatch that figure by a significant margin. Early rumors from insiders suggest as much as 600 horsepower on tap. Our photographers weren't able to get any images of the interior, but we expect some special heritage touches to differentiate it from a standard M4 cabin. BMW hasn't confirmed it yet, but we suspect all 50 cars are already spoken for very soon.