If you didn't feel like reading the subtitles in this thread. http://gamrconnect.vgchartz.com/thread.php?id=135790&page=1

Or you just hate reading articles in general, here's a guy's  preview of all the online bits and more in Mariokart 7.  In plain english. If you already know about the online then just watch the next vid for hype's sake.

Awesome! MK7 coming to Apple.

Mii thing looks cool.

Looks good.

The waiting for this game is driving me mad.

Mario Kart 7 looks great.
I can't wait to get smashing fools online.

I love me some street pass.

Well having actually played MK7 I didn't bother watching the preview. But I must say the game is amazing and all the announcements made thus far just give credence to that fact. I would almost consider it game of the year but I can never make up my mind which game is game of the year. There are always so many great games that defining one as game of the year is just to difficult for me to do myself. But MK7 is definitely one of the games of the year!

It looks like one of the best mario karts out there... Can't wait!