Hi Don---Nice to hear from you, and thanks for the kind words. I am very pleased with the way my side windows worked out, and even more pleased that I get to carry them with me. Fortunately, we don't have many toll highways to contend with here in Ontario. We have one major east/west toll highway here, the 407, but there are no toll booths to contend with---there are overhead video cameras that snap a picture of your car license plate automatically when you enter the highway, and the cameras are tied into the government license data base, so you recieve a bill in the mail for your toll. People who frequently use this toll highway can get a free transponder to stick on their car windshield, which automatically triggers a sensor when you enter the highway, and the toll is cheaper because they don't have to use the video camera system. My windows are only for long trips and emergency rainstorms, as they are not terribly convenient. I thought that there would probably be many roadster owners out there who would be able to learn something from how I did my installation.---Brian