I don't mind about them keeping up, but they take cheating to a whole new level on DD.
I mean, you can drive along fine, and someone goes past at twice your speed. You think, oh alright they must of picked up a mushroom.
Then then fire a shell back at you and hit you, you just keep them in sight, and then another shell from them comes back at you, when you KNOW they haven't picked up any items.
Also, I counted earlier, I was winning on Dino Dino Land, and all of a sudden, someone threw a banana, I hit it, they followed up with a green shell, the next person had a chain chomp which I couldn't get out the way of, then someone smashed a red shell into me, and just as I was getting going, and about to get onto the bridge, some fat bastards came along and knocked me off the edge so I finished 8th.
Piece of shit computer players.