I wonder at what point they'll just solve the safety issue by removing the windshield and adding shit loads of impact absorption and a few steel plates that isn't possible on vehicles where the driver needs to be able to see outside.
The limiting factor right now is mostly that nobody wants to wear 4/5/6pt harnesses or have a properly fitting bucket seat (these things are a big pain in the butt for a daily driver) so we have to keep shoving explosively deployed cushions into places so humans don't bounce off of harder things.
The fact that we can't replace the windshield with something else will likely never be a practical limitation for the foreseeable future.
