Illuminati, I thought that a line lock was the act of locking the front wheels while the back wheels were spinning and keeping the car as stationary as possible, exactly what you were saying except that a line lock is not the button or the mechanical system that makes it possible it is the type of burnout itself. You can get line locker kits fitted by most break specialist, I have a friend who used to have a RX3 with a 13B turbo that had it fitted, a fun little toy. The Summernats are on down here in Canberra this weekend, I can't wait to check out the burnout comp.