Here's a short vid off my iPhone during our trackwalk. It sort of surprised me from a safety issue, when we all piled into pickup trucks and drop to turns, while instructors were out riding the track as had as they could to show us the line; in some cases weaving in between and passing the pickups while driving between turns. Never seen anything like it and pretty disconcerting when they are heading straight at you at 170+ down the front straight and listening to their tires squeal while braking hard...
[video=youtube_share;d7FnLgV0wgU]http://youtu.be/d7FnLgV0wgU[/video]