Overview: The car wash's in America are a $25 billion dollars a year industry, with tunnel systems to in-bay automatics, we'll show you how America keeps it's cars clean. We'll visit the largest car wash, seven acres wide which includes a dog wash, chapel, and barber shop. And then to a wash which uses trained electronic eyes, auto conveyors, and mega vacuums which can hold up a bowling ball. We also show tips for cleaning a car at home. Plus we'll add tar, glue, egg, bird droppings, and a bucket full of sludge to a $160,000 Porsche, and then challenge a detailer to clean it off. Also, see how cars are built to survive a car wash.