Talk:Research & Development Update/@comment-27081367-20151029111512

Regarding car mastery, now it really sucksto finish some car's challenge 15 because GL has increased the rank required to max pro (for most cars), and in some cases even with max pro you can't even dream of winning without boosters! Once I had to use triple boosters to win the challenge (don't remember the car but it was low end class D like Auri e-tron or Tesla) because although all cars had the same rank, the one in first place was godlike buffed so that it was impossible to overtake or knock him down without the 3 boosters...No donuts for you Gameloft!