The photo you're talking about (I think) isn't one of the "Doodlebug". That slipped thru while I was loading photos to the gallery, sorry.
What that is is a photo of an aluminum extrusion done by OK Engines (in New York) of a Seaboard Sun-Lounge car.
Only problem is the Sun-Lounge cars didn't have fluting on the roof.
I've got one myself I bought a couple of years ago I. When it came in I decided to remove the fluting to make it look more or less correct. I'll upload some photos of my car to the gallery, but in the mean time here's a photo of the real deal: