Nobody makes a roll-bar yet. The solstice and sky have 5 star rollover ratings... I dont think any car that rolled and slid in the manner that solstice did would have fared any beter. It didnt roll sideways, it rolled over and slid on its top. The windshield frame cant support that kind of weight, and is designed to crumple in such a way that it would never contact the passengers of the car. It folded flat behind the steering wheel while the airbag pinned the driver safely into the seat, as intended.