I see mobile knife sharpeners, generally outside of North America. Like this man, most have ingenious, homemade mechanisms rigged up on bicycles or mopeds to both provide transportation and power the grinding wheels. I’m a bit envious because seems like nice life, riding around, getting exercise and grinding knives en plein air! Looks like a nice acute bevel he is forming on the knife below.
Peachey Conservation 
That’s incredible! I’ve never seen anything like it – thanks for sharing.
Ahh… the good life!
nice post jeff just found this. its very popular here in the philippines almost everywhere in the downtown sidewalks. these guys hone nail tools for pedicures and stuff mostly. and of course saws, chisels and knives. i guess this kinda trade was adapted by my countrymen when the spanish occupation came here. hope to see more posts like this.