I'm at around 19% completion and I was wondering if the fastest way to boost completion was known. I'm curious about the fastest way to get 25% (so I can try my hand at endurance races). I read in a recent post that most of the special driving missions are 0.2% each, but I was wondering if there's a list for all of the other required events to gain completion in this game. For instance, would a championship be worth more percentage points than, say, 5 individual races? Thanks for your time. If my searching wasn't complete, I'm sorry, I tried looking around a good bit before I posted.