Game Rentals For PSP?

Sony could be working on a new format of dispensing games for their PSP by introducing game rentals. It seems that briefings by Sony has been conducted since March, where users will be able to download and temporarily enjoy full games just like what current video stores offer. No idea on whether Sony will be going forward from the experimental phase to an actual production service, but if the rumored PSP 2 will ditch the UMD drive, online game rentals make a whole lot of sense.