Talk:Research & Development/Audi R8 e-tron Special Edition/@comment-46.227.161.36-20180216122248/@comment-1.247.70.69-20180218021326

I used 40 to save 9 QCs on race 31 (flawless). Failed once, didn't save, passed it once, then failed again, and used the tokens just to be rid of it. Considering the keys only come out every 4.5 hours, I don't think 40 is unreasonable to spend if it helps you move on.