OK, I started this so can I ask your response to this question. How many roll over accidents do you actually know of ? In 20 years I only know of one, but I do know of very many impact accidents where the car did not invert, many of those accidents involved head impact injuries to the internal structure of the car, primarily with so called safety bar structures. If this is the case, and if you were a betting man, where would you place the odds ? Remember also that with the design structure of the car, and particularly the doors, if a car with a roll cage were to invert, you would be just as unlikely to be able to escape from the cockpit because the doors would be forcibly held closed on the roll cage. I will not drive a 40 with an internal roll cage, I have witnessed to many crash damaged cars to know that I believe I am much safer without this "safety" structure close to my head. Frank