To me this game has one big flaw that I can't look past - SOME of us get regularly a "challenge level" that can give bigger rewards if won, but it's so hard that we fail it more often than not which results in us loosing all our accumulated bonuses -- which gets us stuck for long periods of time on the following hard or super hard level AND puts us in disadvantage in all the races and tournaments. How is competing with others fair if some of us get regular "speed bumps"? Makers, fix this please!