I ran over my first step stool like this at Slab City. I drove away from Morro Strand State Park without the replacement I'd bought. Then I made a nice wooden version, which I ran over near Sedona. I made a quick and dirty replacement that I backed over in Colorado. Only one leg was messed up, so I repaired it, but it was an ugly thing.
Since I was passing through Quartzsite again, where I bought the other two fancy aluminum steps (K&B Tools in one of the tents on Kuehn Street), I figured I'd give it another try. It has been a little over three hours and I haven't harmed it yet.