I can't wait for this game. Eight player LAN. I like the ability to view the opponents' weapons coming at you on the second screen. But yeas it looks better than the N64 verion in several ways. Namely framerate and polygonal characters instead of sprites.
They initially intended to use polygonal characters & karts with the Nintendo 64 version of Mario Kart, but due to (framerate) problems they had to opt for sprites with 3D effects. Later, Diddy Kong Racing used 3D models, as Mario Kart 64 should have.
It's good to see Nintendo DS has 3D models now, and a whopping 8-player mode.
-This is 60fps, MK64 was 30
-The DS has better geometry throughput then N64
-The DS only has to render one screen of geomtry, so it would be weird if it didn't look a lot better in that respect