There actually is a sidewalk conveyor belt (and some sidewalk escalators) in operation in Bilbao. I'm not sure how much of a maintenance headache it is in pract

There actually is a sidewalk conveyor belt (and some sidewalk escalators) in operation in Bilbao. I'm not sure how much of a maintenance headache it is in practice, but it does make a hilly neighborhood more easily accessible. https://www.flickr.com/photos/walkingsf/18345027333/ https://www.flickr.com/photos/walkingsf/18345027333/