Who invented the street sweeper?

Answer 1

You're going to think this is a joke but it was invented by a man actually named Archibald Street Sweeper. He named the invention after himself (obviously.)

You can read all about it in Charles Panati's book, "You Won't Believe Where The Name Came From!" (1982, Penguin Press, pp. 212-213)

Answer 2

In the early 1980s, Hilton Walker invented the original DAO-12 (or Street Sweeper), first in Rhodesia, than in South Africa.