I moved to where I'm currently living for 10 years now. Once in a while, I would have JWs come to my door and every single time either I or my husband would send them on their merry way, although my husband is quite rude about it. I'm not sure when the cart witnessing (or whatever it is called) started up, but the only time I ever heard about it was on the internet, or someone here talking about it.
On Friday I took my son to the airport, and at first nothing, but on my way out about a half an hour later, I saw two of those doggone Watchtower carts, and there were two people standing behind them (a man and a woman). It was almost like they were embarrassed to be seen by them. They looked as if they were trying to hide behind them, with their faces averted away. If your wondering none of the JWs in my area even know that I use to be one, and I want to keep it that way. When I got home, I told my husband about it, and he really wished that he was there. He is dying to give them another what for, and much to my relief that he was not.