First thoughts:
First thing that hits you is the graphics, and they are impressive. I have however seen teh screenshots, so what surprised me most in the frist 20 seconds of racing was the AI, it has infact improved, and improved substancial at least from the first veiwings. They try much harder to avoid you, I tried putting them in difficult positions expecting a dull thud, but to my surprise I only heard it once out of many attempts. They jocle and try and overtake each other
The physics where fun too, I got rid of the ASM and TCS, put S3's on front and back, and took the Evo 9 for a spin, on the first physics setting, (Proffesional I recon). And it was great fun to slide round the corners.
The sound I had paid little attention too, until I restarted the race, and hit the brakes to put myslef into last, just to get a good look of the feild. Later in the race I pulled alongside a mustang, and the mustang sounded impressive.
I then thought i would give the interior a quick check, and it for me it is the best addition to the game, it was bettier than I was expecting, you veiw bobs around a bit through G-force, the gauges work nicely, the interior looks stunning, then you press look behind and you can see the rear-wind screen and the big red Evo spoiler, nice.
There are a few more nice touches;
the replays have a few more exciting views and there is even the odd heat haze around.
The crowd, is acctually there, there is atmosphere unlike GT4, you acctually feel as if you are at an event.
menu's are nice, they are far more intersting than normal
The grass and gravel has a much bigger effect on you car. i tried the GTR on the grass and floored it, the rear end snaked about and I nearly lost it, you bounce and bounce over the gravel, like you see in normal racing.
there are more things but I will have longer go on it tommorow, and relay them back here.
Bad points: These mainly reside in the fact it is a demo but I will state them anyway.
Music, I can't turn it off, it will get annoying, plus I want to hear the other engines. Still there may be an option to turn it off somewhere, but I am guessing the options are all in japanese so i won't find it.
Only 2 laps, a demo thing, oh well, I will have to wait until prologue, 16 cars is nice but I can only overtake so many in 2 laps, its good it stars you in 8th, so you can win it, but if you wont to drop back to see the whole feild don't count on re overtaking them all again in 2 laps.
summary:
Impressive, I can't wait to see the new features we will see in prologue, and finally GT5. No doubt the next few days forza comparissons are going to be flying around, so I might aswell say my peice now. ahem. There isn't too much you tell feature wise from such an early demo, the things you can tell is teh attention to detail, the graphical capabilities, the core of the physics engine, and importantly that it works and is fun. So far I would say GT is off to a great start, but it has a long way to go, is it better/worse? its way to early to tell.
lets hear what you think.