Still, here goes: OutRun 2006: Coast to Coast is the best arcade racing you can currently play on PSP.
We can't see how anyone would realistically think otherwise. The entire racing genre is encapsulated when you speed towards the first corner in one of its 13 officially licensed Italian stallions (Ferraris, as opposed to your mum's Fiat), dab the brake while turning, and then catch the backend as it steps out with an effortless combination of steering and throttle, resulting in the most gloriously excessive powersliding in pocket gaming.
So, OutRun 2006: Coast to Coast is gorgeously challenging, its handling system delicately balanced, and the game is both technically impressive (even loading times are reasonable) and intensely entertaining – not least when battling against up to six human players via the excellent infrastructure and ad hoc options.