Mario Kart Wii on track for 25 million 2010, best selling all time?

[mundus6]

My memory might be off, but haven't Mario Kart Wii been bundled with the Wii for ages? So has Wii fit and Mario Galaxy. NSMBWii and Brawl are the only ones of those games which from my knowledge haven't been bundled with the console (except Wii play but that was bundled with a controller).