I would like to be able to share my home network with my car within a 15+ km radius of my home... Maybe using a servo-controlled directional antenna on my car that would always point to my home using some sensors, or an unidirectional would be even better but I don't know if that is possible using open-spectrums.
That remains to be seen but I have a feeling that savings could be seen in the medium term, or maybe just a few years... 4G is too expensive and data caps are ridiculous.