I probably shouldn't complain since I have not done anything to help this project :-) but I don't really see much reason to waste time on 1 and 2 at this point. An easy way to install the software is not an issue until the software exists. If it has to be zmodem'd over your early adopters will be able to figure it out. As far as 2, doesn't hijack provide a nice way to do overlays on the screen that would be ideal for a project like this? No reason to reinvent the wheel just to make it portable if there is already a perfectly good wheel on the platform you are most concerned with. If someone else really wants it to work on a PDA let them contribute the code to do it!

I still wish someone would write something simple that talked to a GPS and used basic screen overlays to display direction, speed, etc. At least that way there is a proof of concept, everything else can be built on top of that.

Just some idle thoughts...
-Mike