Board Thread:Game Discussion/@comment-29749141-20161004205506/@comment-28333578-20161006012118

The truth is, a lot of folks posting here are ignoring, intentionally or otherwise, the elephant in the room, that being the Cloud. Bottom line is, a lot of people use cloud assist to upgrade cars that they have, set a time, then restore to get the gold back. Also, don't fool yourself into thinking that there aren't those who use cloud assist to rent cars that they don't have. So, pay 100 gold to rent the car, then pay whatever the cost is to fully upgrade, then restore to give it back. It happens. Also, I've heard of stuff in the code that allows you to cash in the WTTT rewards multiple times (i.e. you finish Group C, but cash the reward 4 times and get 200 gold)

The general thought is that only people in Group A (about 75 a week) and probably the video bloggers (Guru, Ray Hon, Racer Kain, etc.) are the only ones being audited for upgrades and such on the cars.