Other interesting facts about this burnout:
As you may be able to tell from the layout of the road, this is an old taxiway for jet fighters (and then later supersonic and side-by-side trainers). The concrete varies between 1940s and 1950s mil-spec runway concrete; since it has been tarred and had aggregate scattered in many places. I played around on the concrete itself (you can see the 210' launch on the asphalt up above. And what I found was this: with 555Rs, the launch (defined as just rolling into it, not stabbing it like it owes me money) hooked immediately (unlike the local high-temp enviro TXDOT asphalt on the highway) but would allow the wheels to spin at the top end. Consistently repeatable. And intensely interesting to me. So, on the highway, from a dig, you have to launch cautiously (its all in launch) but as soon as you're WOT and rolling it stays hooked. On the 70 year old concrete, you can get pretty aggressive with the launch, far more so than on the highway, but you have to back pedal it up top or it will let go. Not sure which I like better.