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Let Me Just Top Off The Tank
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Here's a field test of that bus that gets fueled by human sewage, and the reporter and the riders with him say that it doesn't smell. I'll take their word for it. The main drawback of this bus is that it has to go back to the sewage plant to get fueled, And they don't have a good way to put fueling stations in the field so that the bus doesn't have to go all the way back every time. Other than that, the poo bus seems to work. (The Guardian)
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