Carl Bohland’s Auto Wash Bowl

Carl Bohland patented the auto wash bowl in 1921. His idea was that cars would drive into a large, concrete bowl filled with water. After a couple of times around the bowl, the cars would be clean. Or, at least, cleaner.

Bohland managed to open a few auto wash bowls. The problem, however, was that his technique only really cleaned the underside of the cars. This was useful back in the days when many roads were still unpaved and their undersides constantly got filthy. But as road conditions improved, the auto wash bowl became less useful. By the 1930s, the last one had closed.

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