When somebody says to me that they’ve got a new radio controlled vehicle for me to look at, I usually think of cars, trucks, helicopters or maybe even a tank. The last thing to pop into my mind is someone’s grandma strapped to a wheelchair. But what’s to say that I’ve always gotta be right? Stunt Granny is a remote-controlled little old lady, strapped to a miniature motorized wheelchair. (You’ve gotta love the flame job ...