When your house is 25,000 square feet, it has room for a lot of amenities. In 2010, Gerry Chastelet, a retired tech executive, designed and built such a home on 7 acres in Weldon Spring, Missouri.

When most people think of a car wash, they tend to think of an exterior-conveyor wash. These are the washes that put cars on a motorized track and drag them through a tunnel where they are rinsed ...