It seems a very silly idea to me. Apart from Saab's objections, it's also against the terms of service for my ISP.
However, people do silly things with wireless. Recently I tried to explain to a small company that it was a bit dumb to have an unsecured access point in the office, especially when they also had an unsecured network share with company docs (including accounts!). You could park outside the front door, connect, open the share and download what you wanted. Did they care? Nope.