Was on a rural route one day on one of the older diesel 1000's. Went to back into the driveway to get off the road to make a delivery. Didn't notice the steep slope. Slapped it into reverse, made a picture perfect back until rear bumper hit the gravel. Had just enough momentum to pick rear tires up off the ground. All four rear tires had an inch of daylight under them. Blocked the whole road. Luckily the neighbor had a 4x4 post long enough to jam under them to get myself out. Never knew just how busy the country road really was.