User blog comment:Na299/Ways of Gold Farming/@comment-125.230.95.195-20150602110052

Very strange. Before I left for work I did a few races in career, and then tried to back up. I was logged out of Google Play games, and couldn't log in. I left my tab home so can't try workarounds. Anyone not upgraded, tried to manually do a cloud save, and completed a cloud save successfully?