https://www.youtube.com/embed/l04qWEEPFEk
The story goes that back in the '50s, the gas was cheap and the V8s were plentiful, so what better way to let the masses know that the end of the world was coming than with an air raid siren powered by a Chrysler V8?
A quick internet search says that the sirens had an output of nearly 140 …
