Sony has announced that a demo for the PSP version of ModNation Racers will be available this week. There is an issue though. It is only available through the Download Center on April episode of the Qore.
If you have already bought the April episode of the online video mag, or if you subscribe annually will be able to find and download the demo, the new update will be available tomorrow. Obviously this is a late addition so you do not seem strange that you have not before.
The demo will allow players to do a test drive in two complete tracks from the game and try out the track creator. This is the version of the PSP, which is scheduled to leave next month. You can find and buy the Qore episodes from the PlayStation Store.