I found it in a game store Friday end of afternoon.
You know what ? it's not a bad game , i find it a tad faster than psp equivalent, especially in zone mode i was stunt not to reach a high zone at my 1st attempt ( i did compared to Moa white psp : there's 32 zone difference :O)
There's also a weird countdown when you play internal view : when the race is starting you still have during 1 sec a real big 'GO' displayed on the screen a bit disappointing.
I find easier to push nose down on an old ps2 controller rather than the one from psp ( phat and slim) it's not ending like suddenly your ship goes to right or left cause the arrows are linked ( not with ps2)
Graphics like Christian said are better , not stunning ala HD but great even displayed on a lcd tv with an old ps2 (component cable is da best : forget usual RGB it sucks)
DLC tracks are mixed wiith normal ones into the grids and i find it cool SCEE doing that.
I am not that far into the grids to tell you more ( was answering Kigo's question)
