Let's say a massive dust storm (or \"haboob\" if we're being trendy) hit your car.  Now it's a moving pile of mud, and you have 10 minutes to get it washed and pick the in-laws up at the airport.  Clean Freak will do the trick - you car will mostly not be covered in dirt.  \n\nFor $5 and in just a few minutes, that's a really good deal.  \n\nHOWEVER, if you really want it to look great, you'll have to pull over, wipe all the water spots down, get the difficult areas (hood scoops, side mirrors, etc).  Then you'll have to vacuum the inside of it yourself.  Then you'll have to wipe down the inside dash yourself.  Then do the wheels, then the inside windows.  Then you're done.\n\nSo, it's great for a big automatic car wash.  It's not detail work.  If you need that, go to a full service place.