I used to live in the Netherlands, and I can confirm winters are cold and dark. Days are not very bright either. So an eight hour life (yes, I RTFA) for these very cool glowing roads is not going to cut it - nights comprise 16 hours of darkness in midwinter.
It should work well in the summer, when days are brighter and nights shorter.
But I think a backup is required, destroying the whole point.
But it does look very cool, doesn't it?