Man, this is a "strain", and it was long ago. Probably some of you will remember the night they showed up at IRP, and put on an "exibition", during the Kroger Sprint races. As I recall. other than being "super" fast, the wing was most interesting, I think what I saw, was a sliding deal, as they entered a turn, the wing slid back, and up, then on the straights, it slid forward, and down, to get it out of the air, and allow more speed, first time they really got into it, I really thought they were going to fall off, almost like they were on a rocker, or off their rocker, which ever you prefer, I just assumed it was driver controlled, and hydraulic operated, didn't get to the pits that night to look, had some folks more interested in getting sleep, than learning anything. Bob!