This industry test week at the Nurburgring has certainly has a supercar feel to it, with the Mercedes SLS Black Edition and the Audi R8 GT spied turning laps at the “Green Hell.” That supercar trend continues today as Lexus engineers have just begun testing what looks to be an even MORE track-focused version of the LFA!

Initially, this manufacturer-plated test car looked a lot like the LF-A Nurburgring Edition, but a closer look reveals the changes. Its actually the third version of the AD-Special Edition models that was started with the AD-A in blue and then followed by the green AD-B. This one is called AD-X and the color settings reminds of the classic Porsche 911 Carrera RS. With the other AD-prototypes to be said to be one-offs we suspect that this one will sadly also be a one-off. But we can always hope.

The roof, pillars and the spoiler on this prototype are unpainted, showing the carbon fiber weave. We can also see that the front air splitter is much more pronounced, sticking out quite a bit further than the splitter we see on the LF-A Nurburgring Edition.

With the regular LFA, producing 552hp, we’re guessing the V10 in this special edition might be closer to 600hp.