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"Auto Street Cleaner" circa 1913 in New York City. (Hello, alternate side of the street parking.) View full size. George Grantham Bain Collection.
When the doors and hood are closed, bet that would double for a modern armored car or heavy duty swat vehicle.
So I can only assume that this thing, as it churns and clangs its way down the street, must have been completely silent, which is why there's that funny little horn there. :)
But really, would the horn even be heard over the noise of that infernal contraption?
"How do I get to the Susquehanna Hat Company?"
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