Quote from BerdyGaming :Is it possible to have and make a custom racing line? Well, I don't know, but it would be nice to have more than one different race line than the default one
Maybe one day we can use a replay/hot lap recording... so you can save it into an autocross track. Like just a simple button for the host, while watching replays there could be a "save current lap as race line" button.
HEX editing a racing line is not something that should be the only way to change the racing line to be fair