This machine, called the AutoGreenWash, is perfect for those among us who have long wanted their very own touch-less car wash inside their garage. The fully-enclosed machine washes your car automatically with a touch of a button. However, it costs a lot. Dale Retter, its inventor, likens it to a yacht. “If you have to ask, you can’t afford it,” says Retter of the $30,000 price tag.