In the race that I was in, all of the guys that got in on time(only like 4 cars out of 43) made a gentleman's agreement to stop on the backstretch after the greenflag waved, everyone caught up, and we drove at 100MPH on the outside line and let all of the lapped down cars get their laps back, then when everyone was on the same lap, we got the last car to stop on the track to bring out a caution and all of us agreed to fill up and take 4 tires so we basically had a clean race start with fresh tires. We eventually started on like lap 18. Shows that there is still some chivalry in this world..