Todays awesome tail fin is on this 1958 Mercury Park Lane found on ebay. Not only does the fin itself have a cove that runs all the way to the front of the rear door, but there is a freestanding chromed laser-pod looking thing suspended in it.

This just further cements that 1958 is my favorite year for gratuitous finmobiles. 1959 cars may have been bigger and gaudier, but most of them had some cohesiveness to them. The 1958 cars look like the just stuck every bit of chrome trim, bumpers, wings, fins, spears, etc. they could find onto to their prototypes and whatever didn’t fall off on the test drive was put into production.  

Also the ’58 mercury above has the least intuitive transmission ever created.