^^^ Just like the Shell station near home where I first started putting gas in mom's little red Falcon...... It's now been completely re-done into a 'Rocket' gas station and convenience store, selling Union 76 gasoline.
These were the Eldorado Brougham. The stainless roof is their most distinguishing characteristic. I just did a search on the google machine and the information I found says that each of these cars were handmade and GM only built 400 in 1957 and 304 in 1958. "Cadillac only built 400 of these luxobarges in 1957, each priced at $13,074. That was an eye-watering sum back then and it equates to around $118,270 in today’s money." So, not one-off cars, but with those production numbers, they're about as rare as you can get.