I dont remember if i allready suggested it :
When u pass last CP, uare send to another world to not be able to block finish of the race.
But , if u do /r u re send to normal world and can see other racers who dont have finish the race. so in laps races, /r respawn you on grid in normal world and u could cause crashes for others racers.
So i suggest that once a race is finish and u're send in finishers's world, /r let you in the world u are
I hope to be clear