Recently I've been seeing on my internet travels information about the upcoming "Smart Walker." What is it? The promos claim that it can make walking easier and that it can turn into several things--rollator, walker, even a wheelchair. Walking, it seems, is a breeze! I don't know exactly what it will do on the New York streets, which can be narrow and difficult with bumps, corners, etc., but it sounds good initially, though I remain perplexed by it. I signed up with my email to learn more.