When most people think of a car wash, they tend to think of an exterior-conveyor wash. There are other types of washes, though, including self-service car washes. Most self-service car washes are coin ...

BreAnna Nixon and her husband put down a $16,000 payment on a self-service car wash in 2017. They only wanted a second income when they began the venture with Nixon's brother and his wife. But they ...