Hi, I found your video on bike locks very interesting. My friends think I'm paranoid because I use a long u-lock and a long cable, but I don't care - I don't want my bike stolen. I think a bike thief is going to take the bike that is easiest to steal, and my bike isn't that one.
I'm wondering why bike manufacturers don't have the locking stem at the handlebars. We had bikes like that when we were kids.