Unfortunately, I had a really bad experience with another car when purchasing the extended warranty. When the original warranty was up, I had a tail-light harness that went bad, and after several light bulb changes from the dealership, they finally found that it was the harness and the service manager came out and cussed me out telling me that I can't bring the car in for every little thing blah blah blah! So, the only extra coverage I got when I bought Bruno was the GAP coverage, although, I have heard horror stories about that one too.
I will have to look into the extra window coverage from my insurance, especially since I live within 2 miles of a rock quarry (sp).