Will it float? Can a mobile art gallery make a profit?

I am an art teacher and artist and have been contemplating a mobile art gallery as a small business. Fishing is big here, so I would call it Gallery Bob with the tag line “art that floats” and use fishing bob in the logo. A select number of artists (6?) would give me a commission to display their work at regional venues, events, vacant shop windows, etc. Security would be an issue as it would be largely unmanned with a website to handle purchasing.
Am just curious to get a reaction and hear pros, cons, similar experiences.