An overpass 20 stories up? I guess it's possible. But I don't get the point of glass guard rails.
I think it is even worse.HaruhiToy said:
But I don't get the point of glass guard rails.
Holograms
Could be force fields, like in F-Zero or something.
It's set near future. It'll be some sort of energy barrier, probably allowing for better absorption of energy than concrete.