When I was a very young kid in Lansing MI... There was a van that drove around the city with large lettering on the side that said "Blind Man Driving".....
I always wondered how he could.... Spent time trying to figure it out..... Dad said with a smile that he didn't know either....
Until one day I saw the rest of the small print...... "Custom Window Blinds installed"
Quit believing in Santa soon after......

Brad