> It's an interesting idea, for sure, but I just don't see how it makes any sense at all for roadways, where the tiles will be subject to constant stress, grime

> It's an interesting idea, for sure, but I just don't see how it makes any sense at all for roadways, where the tiles will be subject to constant stress, grime/dirt (which will reduce the already-not-great efficiency of PV cells), non-constant sun exposure, and prime opportunity for theft. This is the part I don't understand...do people not realize how dirty roads are? How often will street cleaning need to be performed to make sure they are collecting enough power for just the LEDs? How are they planning on handling all of the leaked oil/coolant/etc.? How many cans of spilled paint (accidental or otherwise) will it take to bankrupt a city's road budget? People are willing to risk their lives to steal copper wire...how are they planning on securing every hexagonal foot of road in america when they're each worth $1000+?