I just love this! A man named Mike for the past 60+ years has been driving his knife sharpening truck around NYC and surrounding areas offering his services to anyone interested. He is a portable knife sharpener. Mike and his notorious green truck were spotted on my street just the other day. I was so happy to see him in action! Unfortunately I didn't need any knives sharpened, but next time he's in the area I will definitely be using his services even if my knives are already sharp; just for the experience.