I have to say, I have a chub after reading all this
I have looked into carputers here and there for a couple of years and would be extremely interested in your systems guys, especially if you can get them in the sub $2k range. I agree with rodster that the market is endless and if you can provide the wiring diagram to hookup to different vehicles it would sell like crazy. If you go and buy a decent aftermarket Nav system you are going to spend a minimum of a grand anyway. Does anyone know if the 7" system would fit in an H3? Can you make it work with the Monsoon system? I love the idea of the system going into standby mode so you don't have to go through startup every time. I don't know about the H2 but doesn't the H3 have a system build into the electronics to shut down power to accessories when the voltage gets to a certain point? With WiFi you could add a booster antenna couldn't you so you could pick up more connections?
If either of you are interested, I can talk to a local shop that I deal with that does higher end work and see if they are interested in selling/installing the systems.
If you don't sell the whole system you could probably do fairly well selling the front-end software and skins for the system as well as recommended software or provide sources for these for the DIY folks that can build the system themselves. Wouldn't be the same sales figures but the warranty issues would pretty much go away and you could provide email support for the front-end. I am sure that I will have many more questions if you guys don't mind

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I don't care about the "Jeep thing"

as long as my mail is on time!!!
Slate Blue H3 Adventure w/sunroof, Monsoon/NAV, DVD and marker lights