I have just ordered my SE Business estate with the 'Sound Insulating front and rear' glass option. I have taken a chance as I havent been able to try a car with it and even a google around hasnt given me much info about it. I sort of feel that if it was any good there would be some db with/without figures available from VW. I might ask them. Anyone got any idea of its effectiveness, subjective or otherwise? Even after my 16week delivery wait I probably wont be much wiser when it arrives