Stripping downforce from the Blackbird 66 Mk.1 – a lot of downforce – is central to the concept. This is the conversation I’m here to have, and the basis for the Mk.1 project you see here. Blackbird 66 Mk.1 (left) compared for size with an NTT IndyCar Series car (center) and a current-spec, ground-effect Formula 1 car. Aside from the possibility of turning power down to, say, 850hp, the Blackbird 66 Mk.1 in superspeedway spec isn’t very different from its street/road course guise. Check out the Blackbird 66 Mk.1 in the new issue of RACER magazine, out this week.