Wrecking, cheating
Ths system has absolutely no way of stoping wreckers, backwards drivers or stoping unfair driving.
All we can do is not to count such a race towards the "Ladder".
The only way I can see cheating is possible, is to send a race result of a race which never occured, or to send wrong data.
The mechanism to stop this will be your monitoring of the race results.
There will be a feature where you will see all races in which you took part, and if you see that something is wrong,
contact me and the race will be deleted/updated.