This has to be my biggest gripe with this game, in how the developers incorporated online play. I honestly have never played a game with so many rage quitters, it's ridiculous! Reaching 100 races and 100 wins is a grind in itself, and the amount of rage quitters makes it even worse, considering you're not credited with the race or a win if the player(s) quit. That aspect of the game should really be fixed, and the culprits should be penalized in some way.
Racing games are one of my favorite genres, and I'm damn good at them. Out of the 70 online races I've managed to complete, I've won 66 of them. Reaching 100 and 100 could take a while though, depending on how often I get stuck with sore losers.