Is it common in other towns for a man to drive around ringing a bell (like an ice cream truck) offering knife-sharpening services? or any other similar services?

In a few towns I know I’ve seen what looks like an ice cream truck driving around ringing a bell. On the side of the truck it says it says he offers knife & scissor sharpening.

I’m not sure if this is a world-wide phenomenon or just this local area. Has anyone else in North America seen this?

How could this man possibly be making a living? He drives so fast down the street that once you heard the bell, you would literally have to make a split-second decision to run into the kitchen, grab your knives and run onto the street after him.

It just seems so bizarre to me and I’d like to know if this is a common service or just some crazy local man.