I used to own one of those and I really liked it. HOWEVER, when I came to grips with the fact that I was hiding from my wife how often I fell while riding it, I realized it was trike time for me. I probably had 10 falls the last six months that I rode the Rocket most of them 0 MPH events. In the interest of full disclosure, I'm not probably a typical rider. I have a history of PTSD following a bicycle accident and I've had several concussions and broken bones.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.