Summary: This game is absolutely awful. Fortunately, I picked it up for only a few pounds, but that still does not excuse the poor control system and terrible coding. Often the cars get stuck and there are many graphics issues. The sound is not really anything to write home about, the graphics certainly do not push the PSP anywhere like to the limits, and the gameplay is too "bitty".
Summary: I've been a big fan of the Micro Machines series since getting the original on the NES. This incarnation however leaves much to be desired! The software house brought in to knock this up completely missed the advances of v3 on the PSX, and have turned on something pretty second rate. Future implementors of this francise should spend some time playing Mashed: Fully Loaded.