This is something that could easily happen to me:
I remember a scam about self-cleaning windows. These windows were sold to old people in France.
Oh dear, I cannot believe this (published by NYT):
Self-Cleaning Windows to Be Sold in U.S. This Year
Window washing ranks high on the list of most hated household tasks, and some glass makers are hoping that this loathing runs deep.
Today, Pilkington, a British glass maker, is set to outline its American sales plans for a new technology: window glass that cleans itself.
The company first showed the self-cleaning glass in Britain in February and has been selling it in limited test markets in Ireland and Austria. Pilkington officials said the new glass, which is now being manufactured in Ottawa, Ill., will be available to American consumers later this year.
But Pilkington will not have the market to itself for long. PPG Industries, a large, Pittsburgh-based glass maker, is working on its own version of the technology, and hopes to have a product on the market soon. Some Japanese companies have also said they are working on self-cleaning windows.
''This is one of the holy grails of glass manufacturing, windows that clean themselves,'' said Richard W. Karcher, president of Pilkington Building Products North America.