Fuel cells aren't right around the corner. They're around two or three corners. Yes, they're here, but that's like saying that atom-sized transistors are here -- yeah, in IBM's labs, and that's it. Just because something is invnted doesn't mean you'll see it in any consumer products for a long time. And the Admiral is right -- you can't just slap a G3 into a PDA and expect it to run off of two AA or AAA batteries like Palm devices do... or even their rechargeable models.
The G3 is considered "low power consumption" by DESKTOP and maybe LAPTOP standards. It would be considered "insanely high power consumption" by PDA standards.
I'd be willing to make a bet of $100 that we don't see a PowerPC-based PDA in the next year. After that year, we'll review and I'll consider betting another $100 on another year after that.
At any rate, the processor they've got now is good-to-go for a while. It does what it needs to do, and fast, too.
I think this topic belongs more in the "Rumors" or "Palm PDA" sections rather in "Hot Topics and General Discussion."