I actually do hope tunnelling software is made for Mario Kart. Its multiplayer will be MUCH better with people who are playing in the same room, but it's not easy to round up a bunch of people who want to play it. Of course some multiplayer aspects wouldn't really be feasible online (coop, like what Rick was talking about), but standard battle mode would be pretty cool. And there wouldn't be any there wouldn't be any people swearing or yelling at you, unless they add the option to talk in-game.