I am very disappointed with SegaGT2002 Online.
The graphics took a step backwards - the car models look like some beginner models that appeared in the early days of Need Forspeed 3 and 4 - when all the world went crazy creating custom cars for the NFS franchise.
I played GT2002 and then GT2002 Online backtp back to get a good judge - and it seems they reduced or somehow altered the polys on the car models to perhaps cater for the inevitable lag situations (that did occur on the 3 online races I had)
The Sega's need to ask the PGR2 netcode programmers to tell them how they managed to keep the graphics AND online play so smooth.
BUT- BUT - The biggest letdown is that you CANNOT (at least I have not found a way) cars from your GT2003 garage into your online game.
All you can do is a ONE TIME upload of 100,000 credits from a GT2002 savegame to a GT2002 Online game.
And - you can only have ONE GT2002 Online save game per XBox Live account - so if you don't be careful (like I did GGRRRRRR) you can over-write your current game and be up shit creek.
All in all Sega GT2002 Online, is too little too late - in the face of PGR2...
As always your milage may vary....
p.s. I have been having a lot of fun with Group S Challenge - If you can imagine Best Motoring on the XBox...
Heaps of fun.