[meford4u]

The glass roof does not open and move.

That glass has more rigidity than steel.

Just think of it this way. If a rock hits your windsheild, how often does it get damaged. If a rock hits the hood, how often does it get damaged.

Your going to have alot better roof with the glass.

And we asked the same question about the heat in that thing. Apparently there is going to be a button to push that changes the glass to reflective to disperse heat and sunlight away from the vehicle. I am not quite sure how it's going to work, but I have an idea.
Have you ever seen the bathroom windows that change from clear to opaque with the flick on a light switch? Same concept I believe.

And Nos, you aren't receiving my point. See it in person and you won't think it looks anything like the Mirano.