Apparently they are still around but only in Metro areas. https://www.google.com/search?q=knife+sharpening+trucks&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi7j6qhr83XAhUG4CYKHWXaBlQQ_AUICygC&biw=1368&bih=782 We have a ton of developments where I live that are ripe for something like this. Saturdays only when people are home. I'm surprised the Jehovahs haven't thought about killing 2 birds with one stone.