I'd have to say that the Hummer rolled due to driver error or at least driver exceeded the limits of the vehicle in taking the wrong line. If you could get a Metro there it should easily have kept all 4 firmly planted and been able to drive through, of course it is much narrower than the Hummer. Even still we have taken many stocker vehicles through this trail, sure we had to work them to get through but still that was not the toughest part of that trail.
