Chris-
So much of our infrastructure is in poor shape in need of replacing (there were some bridge collapse fiascos a few years back) that it makes the most sense to use this tech while replacing/repairing it.
This would make the most sense in Cities / suburbs, and the highways/beltways that feed them. This is where the majority of the power is being consumed, start there first. Doesn't make too much sense to run 50 linear miles of the stuff to service 15-20 homes in the middle of nowhere. At least at first. Give those guys the Roof replacement. (Shingles are made of asphalt, and so are roads)