I haven't seen any discussion around the safety of an all glass roof as it relates to a rollover. Thoughts?
As others have mentioned. Tesla does a lot of safety tests an the like.
The probability of a roll over in most EVs is very very low. The placement of battery packs in the skateboard lowers the center of gravity and acts to anchor the car more firmly to the ground.
The somewhat equal distribution of weight by the same pack also provides these vehicles with exceptional handling.
My worry with the single pane of glass is a rock-chip on the front windshield and what would that cost be?
In the early days, Model S windshields were $2,100. Down to around $850. I don't know what a Model X windshield costs, but with that curve for the panoramic windshield, expect it to be pricey.
Now one piece of glass to cover the front and back. That looks expensive.