I have an idea and maybe you can make it if its possible in Drag mode;
You know the drag called "Loop" right? Well its just for 2 drivers and I did the following
Opened 3 accounts, 2 sandboxie 1 normal
Then Account A invited to Loop, Account B accept and enter the lobby
Account C gets the invitation but don't enter the lobby yet, then Account A cancel lobby and Account C accept and enter the lobby, those drags would count as multiplayer and we can unlock the Drag Racer archievement, we need your help to make it "Drunk driver" to drive forward and we put both cars in automatic, and click next, next, select the cards and click race again, In my case I don't care about the time it takes I mean the races, would be like 2 races every 3 mins, I just want to leave it doing races overnight, and don't get suspicious times at nfs-s.com, I hope you understand it bro and thanks in advance oh and tank mode would be helpful cause there are many trees, if you can do it, that would be wonderful, If not its ok too man