And super thanks to a reader for the details:
“Early 50s Buick Roadmaster. Think about a ’53. An interesting tidbit I came across researching Dynaflow, since it seemed odd that a transmission would be emblazoned on the side of a car: It received early testing in M18 Hellcat tank destroyers, which were built in Buick’s plant in Flint, Mich.
Spotted outside Masjid Muhammad where New Jersey Ave., 4th St., and P St. NW all come together.”