In the video they used an image of an open road, but I think we would more realistically start seeing this in cities first. The led lighting would make a great cross walk. I just watched a lecture about the future of roads and this same startup was highlighted in the presentation. The lecture is by Bjarke Ingels and this time he collaborated with Audi....

Wouldn't wet glass be dangerously slippery?

I've thought about piezoelectric road surfaces, but I'm not sure how much electricity you could get there. I've also wondered about cars with magnets that induced currents...

It's an interesting challenge.