The fuel pump went out on our 1968 Mercedes 220 as we (whole family) were headed for Mazatlan Mexico, in the middle of the desert. I told my wife that it wasnt a big problem because Mexico maintains a fleet of "little green trucks" that serviced tourists in broken down cars, and Mercedes was a common make in Mexico so they would have a fuel pump. "We are not in the middle of the Saharan desert." I told her. Several hours later, after seeing only a few starving cows, I told her, "I think we better get ourselves out of here." I found her shower cap and made a diaphragm out of it, some dental floss tied it to the shaft and finger nail polish sealed it around the rim. We went on to Mazatlan and all was well. I scoured the automobile parts shops for a fuel pump and, finding none, went on about our vacation. I forgot about the repair, and two years later I sold the car. I wish I could have been there when the mechanic opened that thing up some years later when it next failed.!.! That flowered shower cap material would have been a big surprise.