I like the idea. Whether it succeeds depends whether we adopt them using good habits or bad ones, and whether we adapt to accommodate them and make them safe and convenient for users and non-users alike.
An idea I don't like: traveling around in polluting fire breathing steel boxes much bigger than we need, taking much more space than we need, wasting so much of our city to store them, and having to pay all their direct and indirect costs -- whether we use them or not.
Bookmarks