3 star Drift zone Problem...

Hello all. First time posting on the community page. I hope all has been well with you during these past few months. 

The 2016 BMW M4 GTS is unlocked & available for purchase when a player has earned 3 stars on all drift Drift zones in Palm City. (Car #122)

As of Sunday. January 31, 2021. I have completed in full this undertaking & despite my review of the map; I fail to see where else I have to set a 3 star score so I can buy car #122. 

I've closed & reopened my game but I still can't buy it. I've concluded this is a bug in the game that needs to be corrected. Has this happened to anyone else.? 

I want my BMW M4 GTS. Thank you to for your help.