You can buy them out of a catalogue, and if you need it in a building I think the building requirements are simpler than most other retail space. I used to work

You can buy them out of a catalogue, and if you need it in a building I think the building requirements are simpler than most other retail space. I used to work in the railroad industry and even train washes, a much rarer thing than car washes, were purchased practically as turnkey things.