Star Wars Drunk Driving PSA (1979)
https://www.youtube.com/watch?v=lxpz3Lp-PCk - from the DisFanReview YouTube channel (30 sec.)
The blurb:
“An anti drunk driving public service announcement produced by the United States Department of Transportation’s National Highway and Safety Administration. The ad features the denizens of the Mos Eisley cantina.”
Also, a 16mm sourced version:
https://www.youtube.com/watch?v=0_VW9O9Y5ZU - from The Retronaut YouTube channel (38 sec.)