I had forgotten that Alex Tremulis designed a street sweeper... huh! I had forgotten until Dennis mentioned it, and I went to look it up. Thanks Dennis!

https://www.hemmings.com/stories/2011/12/07/mobile-alabama-1940s

The one I posted yesterday didn't have the Austin Western lettering on it. But the two I posted in 2016 (and completely forgotten) did http://justacarguy.blogspot.com/2016/05/austin-western-street-sweeper.html

https://www.pinterest.com/pin/461337555561706800/
https://www.adspast.com/store/customer/product.php?productid=40820

Austin-Western was the first road machinery company, with its origins dating back to the start of modern road building after the civil war. In the 1950's, as the Interstate highway commitment signaled the last of that great road infrastructure boom, Austin-Western was paired with Baldwin Locomotive, a holdover from the great age of steam.

https://www.worldsweeper.com/History/AustinWestern.html