I have absolutely no idea what I was looking at here! Yes, it's obviously some kind of antenna but it is like nothing I have ever seen. And it is not mounted on a police vehicle -- it is affixed to a Lincoln Town Car! Anyone want to guess what the driver is listening to? Sounds from space?
I'm a transplanted New Yorker who loves the Tucson climate. On New Year's Day I have a bit of fun calling my (snowbound) east coast friends to announce that I'm drinking coffee while sitting on my patio. (: