Mario Kart Wii is one giant bundle of stress. I fancy myself a pretty awesome mario kart driver, complete with sweet drifting ninja skills. It's too bad it doesn't matter in the Wii version, because the artificial support the tail end of the caravan gets is insane. It basically boils down to an alley brawl, except it's 11 on 1, and they all get machine guns, and you get a wet napkin. It is actually better to stay behind for the first lap and a half so as not to be bombarded, then take first place for the next lap, and then hope to dear god that you can survive all the lightning bolts, pows and blue shells headed your way.
You're actually lucky if you can enjoy 5 solid seconds of continuous driving.
Oh well, at least the Miis look cute while driving.