The ModNation Racers team has created 2 awesome trailers which showcase track creation and intuitive use of the PS Vita touchscreen, both videos inside.......
ModNation Racers: Road Trip Prop Placement Trailer
ModNation Racers: Road Trip Track Studio Trailer
Remember that though it does not have multiplayer, it still includes some very creative features. Its still worth picking up in my opinion.
Let us know what you think of ModNation Racers in the comments below!