Could I just add? One thing that people don't realize about scooters is that there are no regulations for them. You could have your licence taken away, as many people increasingly do, for various reasons, and you could go down to your local store and purchase a scooter and be out on the road again. In Europe it's considered a very, very significant problem.
In places like Niagara Falls in Ontario, where there's a larger concentration of older people, I've spoken to the municipal officials there. They see it as a huge problem, because their sidewalks are cracking and aging and they can't keep up with the maintenance. They have some very nasty accidents.