It can work at the big car level because theres minimal classes, more time. Karts have 20 plus classes with limited time.Two tracks around me do it by hand on printer paper or print it off timing system. I think it would be cool if kart tracks could use a similar system to other dirt series where drivers are given a code at registration that adds them to an automated message system. Then the track could text out changes to race lineup or other important info, I have seen this work with great success at the big car level, but I don't know the time/cost to implement it.