Or you could add an electric motor.... It's the #21stcentury ffs 
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I like the part of this that is healthy like taking the stairs but is easier on the knees. However, I would prefer a seat belt and/or some kind of elevator-like enclosure for when I get to the 30th floor and my legs are wobbly and I lose my balance.
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How do you get off?
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cool but id perfer elavators
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Nah. I’ll pass on this
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What could possibly go wrong?
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Just what the hell is an "elevator and stairs dilemma"? Also, how do you call it back to the ground for the next person?
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