Leave it. Wouldn't fit in the garage, insurance would be ridiculous. Keeping on the street would be a mistake. Would get banged up in the city. Useless for the cost and anoint of driving I do... Not worth it. (I once bought a nice brand new car and dumped it for a hooptie six months later for those reasons).
Third very able arm which you can hide from everybody at all times in any situation.
It would be hidden even when naked? Does it shrink back into my body and appear only when required? Does it have any negative medical impacts on my body? Think I’d leave it, still.