Talk:RACING SPIRIT/@comment-27503391-20151230231828/@comment-26249703-20151231120015

A similar phenomenom has been reported in High-Tech Legends. It would be the first occurrence of unlocking a career series through progress in a bonus series (referreing to HTL) or buying a car.

It's certainly useful info, but more research has to be done to determine exactly the conditions under which this occurs :)