Windshield Wonder Really Works
You've probably seen the TV ads for something called the Windshield Wonder that has a little pivoting head to make it easier to get to the narrow little space at the bottom of the windshield. My wife bought one--and this really does work very well indeed! Not only useful for getting into that narrow little spot at the bottom of the windshield, but also useful for the Jaguar X-Type's back window, which is a little clumsy to get to with your hands.
It's made out of cheap plastic, but then again, it was only $10. The only real deficiency was that the screw that holds the hand together for the extension pole was loose, so I had to tighten that up. But the "microfiber" cloth really does a nice job of cleaning the glass with just tap water--as long as you don't get the cloth beyond damp.