This is probably more of a general question than a Micra specific question but.... I've had my Micra for 6 years now. I am having a terrible time with a film buildup inside the car affecting the front windshield. The other day, I turning into the setting sun and immediately had to pull over and wipe my windows because I could not see!!! The next day, I cleaned my windows inside and out, and that evening, it happened again. Any advice on what I can do, what I can use, to keep the windows clear for more than one day? Thanks in advance.