DonWii on 05 September 2007
IT'S ALL LIES.... 
Official Nintendo Magazine - we goofed with Mario Kart Wii details
“The details printed in Official Nintendo Magazine 21 regarding Mario Kart Wii were healthy speculation on our part and are in no way an official announcement from Nintendo. We are sorry if we have mislead anyone. We do not set out to mislead our readers. ONM apologises profusely for any misunderstandings that this has caused.” - ONM (original story here)
http://gonintendo.com/?p=24457
