This would be an awesome addition to the game. Honestly wouldn’t mind doing these especially if each one had a prize or unlocked an event for completion.
Specifically, we need a racing etiquette training before allowing multiplayer racing. Some people don’t even realize that they’re doing something wrong when ‘defending’ by swerving in front of, or into, another driver.
Make the drivers handle three-wide on a straight and two-wide in a turn without affecting the other cars. Allowing a pass. Maintaining distance while following into a corner. Re-entering the track after going off, and avoiding a car re-entering.