ccf
Guru
This might make the evening commutes a bit safer:
https://techcrunch.com/2016/10/07/poland-builds-a-solar-powered-bike-path-that-glows-a-ghostly-blue/
-Cliff
https://techcrunch.com/2016/10/07/poland-builds-a-solar-powered-bike-path-that-glows-a-ghostly-blue/
-Cliff