every time I've seen a Jeep there usually way behind the driver not like in Drag Racing where they need to be x amount of distance from your head and have to have a bar going down by your arm and things like that? Also the inheritance narrow short wheelbase of a Jeep is kind of a trade-off.. well likely your body is nowhere near a Jeep roll bar if it was it would be better to have it.. the rollover statistics on a Jeep got to be astronomical compared to any other vehicle.. of course I'm going out on a limb saying that but it sure would make sense..
