I bought this for my mother. She is 78. She absolutely won't ride it, as, per her exact statement, she feels it is trying to kill her. It is incredibly touchy when you hit the accelerator, and brakes very quickly.
That being said, this might be the war machine for you if you are looking for a fast scooter. This is not a scooter for a 78-year-old woman who wants to go to the speed of a 78-year-old woman.
When she got on this cart and drove it around a little bit, it was like watching somebody at the fair drive a bumper car. It has a tight turning ratio, and its large shape can be tricky to navigate around corners. I can't count the number of times she ran into something with it. She even asked me if it came with a helmet.