Addicting PSP game?

I'm taking a trip soon, and it is going to be about 16 hours in a car -_-.

I can buy one PSP game for it. I need one that is addicting and will take my mind off of driving. I'll play almost anything so suggest away. Also, I don't want a game where I will play for a while happily and then be like "WTF DIS NO FARE!!!!" and put it down and plunge into boredom. Something that will make me play 'How Could This Happen To Me' (Simple Plan) when the trip is over and I need to get out of the car.

Help?

Burnout: Legends is a great game is only 20 dollers, its a car game that focuses around fast past carnage, similar to that of a demolition derbyish. Never can go wrong getting a GTA: LCS the storyline and game is long, and its fun to do the various mission or just mess around and blow stuff up. If your into sports games, NHL 07 is pretty fun and NFL Street. Hmm if your a fan of RPGs i liked the Legend of Heros: Tear in Vermillion, boring gameplay but really really really good story. So far all the games i listed are 20 doller games. Um Untold Legends 1 and 2 are both very fun hack and slash games, your character can be customized(weapons, etc) and learn different moves. Medal of Honor Hereos is a fun game, its a FPS and I assume there are quite a few people online i think. Midnight club is probabley the best Customizing car game out there, the races are fun, but you have to get the Greatest Hits version since the load times are cut in half from the original.

Agree on previous posters with burnout legends. Its a port of the previous console, but is always good fun if you've nevered played this entry to the Burnout series.

So now... no one mentioned Lumines yet!?! Pick up either 1 or two since they play exactly the same. L1 is should be super cheap especially used, L2 has fancier graphics and in game FMV backdrops. Either version of the game can last for an hour or two session of straight puzzle eyecandy gameplay once you get the hang of it. This game has turned half-hour bus rides feel like five minutes. Tip: don't rush the timeline.