If you made it to the end then you definitely deserve the Oscar! Well done, who did you play as? It's funny you mention mayhem, the game actually started as a "knock stuff around" game and became a "do donuts forever" game!
For anyone else who sees this, if you want to see the ending cutscene without beating the game: Go to Challenges > Donut II > drive out of bounds and it will play. CHEATS!