Toby, our 90-lb "pup", got too old to get in and out of the SUV on his own.  The Petstep saved the day.  Easy to deploy, easy to fold and stow.  You WILL crush your fingers ONCE while folding it up, but only once.  Sorta like a child and a hot stove. Live and learn.  I don't really see any way to redesign the edge to avoid this without making the Petstep more difficult to use.  By the 3rd day I was able to deploy it from the back of the SUV in about 5 seconds, and stow it in about 10 seconds.