[HamWAN PSDR] EMcom vehicle setup

Hello from North Dakota Earlier this year I purchased an Ambulance to set up for emcom as well as camping. As I am in North Dakota there is no HamWAN system in place. I do hope to travel to surrounding states so I would like to incorporate some highspeed data in the setup. I would like to put a wireless access point in for local connectivity for cameras. Has anyone tried to set something up like this? Also I have thought for a few years about building a HamWAN cell site to allow access around town. I am still looking at roof tops to think if I can find something that could work. A lot of pieces to find and put together so any info would be appreciated. Thank you Jason Linz ND0JL