The Dog'O'Matic is an automated dog-washing machine. A wash takes a total of about 30 minutes with the Dog'O'Matic, 5 minutes for the actual washing with jets of water and an additional 25 for drying and bruching with warm air.

It supposedly is not traumatic for dogs.  The inventor…

says that it is very rare that a dog is agitated or panicky during the wash, and in any case the door can be opened at any point during the wash to let the dog out in the case of panic.

Right.  I'm guessing the dogs are not panicky or agitated because they're in shock!

More here.