Done lots of happy laps at LP and one sprint day that turned into a swim meet. I was running normal 595's that day so I think me best time was about a 79 or something.
For anyone coming out to watch on the day, the Evo club and BMW club are having a lunchtime happy laps. http://www.skylinesaustralia.com/forums/topic/443557-happy-laps-at-the-sprint-day-07-june-2014/