I've been following Ōban Star-Racers (or Molly, Star-Racer) for 5 years now, and it's finally getting here... the only major change is that the characters aren't cel-shaded anymore! Pretty fascinating that they'd do away with that plan. That's probably why it took 8 years to make it, since they probably needed to start over somewhere along the lines.
The show still looks like it'll be awesome - the characters are well-designed, the style is much more fleshed-out - but I was looking forward to a completely 3D CG show. I guess having all the backdrops and mobiles rendered is still nice.
The music's fitting, too. Still got an anime feel, but a lot nicer than licensed J-Pop.
edit I guess you couldn't say I've been actually "following" it since it seems they made this jump from 3D French animation to 2D Japanese animation back in 2002. Oh well!