u can have a very large LAN party tho....the only downside is that u can only use stock Arcade mode cars.....wut a waste of $20.00 for a Pro I-Link.......
Welcome to GTPlanet, Bavarian! To answer your question, no, you cannot play GT3 online. The next game, Gran Turismo 4/Network will contain online play.
I too began to find the AI less competitive as I progressed through the game.
One outlet/learning experience that I found was when I picked up a sharkport. It has allowed me to download/upload a number of replays. This lets me race against some of the best racers out there.
That's the next step for you. It's not on-line racing, but it;s the closest you'll get with GT3.
I, personally, wouldn't be willing to make that trade. I want cars...I want a bigger racing experience...I don't see a point in online racing, personally that is. We already have OLRs...the only thing that would be different is that you can see a manifestation of the time you're trying to beat...On the other hand...If gt4 was on a multi-disc platform...Then you have another thing coming, and online racing would be welcome.