What The F#@K!!!

In a service station up near Redcliffe I saw this interesting vehicle.............

Does this mean it's a mobile surgery? And what do they mean by 'Satisfaction Guaranteed'?

"Mate, I guarantee I'll feel real satisfied once I've removed all your organs. You'll be lying in a bathtub full of ice in a seedy motel bathroom, but I'll be satified."

Until next time. Check ya' later.
The Tow Truck Guy