“….name of that car wash in Mississippi”
Not carwash but convenience store chain, Dodge’s Stores.
I hesitated naming because it may be relatively easy to copy-cat what someone else does but it’s often difficult to duplicate their success.
For example, I operated a carwash in Roswell, Georgia where the lobby did over $100K in greeting cards alone whereas a sister site further south would barely sell $25K.
A carwash located near strip center or shopping mall might sell zilch.
Plus, there is now the internet with DIY greeting cards,
apps, etc.
Additional profit center is no different than wash. It begins by solving location problem.
What is public need and is there unmet demand?
People need tires so their cars can move. So, how many tire stores are there, how many people buy tires online to save money. And so forth.
So, maybe the unmet demand is not tire store but rather service to mount and balance tires because new car dealerships and tire stores tend to soak people who buy tires online.
People like to eat.
So a safe bet for most carwash with lobby is gourmet coffee service and warm cinnamon buns.
You don’t need a license to sell coffee or pre-prepared pastry from a bakery.