Comment Nanite roads (Score 1) 216
Someday I'm confident we'll have nanite roads. Maybe we could have the roadway act as a solar collector - if all the roads on the planet were solar roads, we would generate 100x our current power demands (which includes oil/gas). Plus, the nanites could form power conduits, creating a large, redundant power generation and distribution network. Maybe we could use them for data too - gigabit to every home.
Nanites could clear debris, break up ice, melt ice and snow, and could directly generate the lines on the road - allowing for glowing lines (which would greatly increase safety). Light poles would be more feasible since it's a few feet to connect them, instead of having to run power lines. The nanites could automatically repair themselves. Heck, maybe we could get them to self replicate within the confines of the road, so we just have to spray an initial thin layer on and let them do the rest of the work.