Pinks All Out Epic FAIL in progress.....
It's still very possible for someone to sandbag a much faster car to get into the chosen group. All one has to do is ask to run a later time trial, then watch the field run. If you see alot of mid 10 cars then set your car to run those numbers. Sure it would be hard to know exactly which time range they choose, but I'm just pointing it out as a possibility and i'm very sure i'm not the first to think of this.
Any time you have a certain time that everyone should be running, this problem will eventually pop up.