The Brougthome company was a small coach building company that was able to team up with cadillac and build a one off concept car for the 1956 GM Motorama. The Vilcea Sedan was built as the initial concept for a new sedan Cadillac was planning to build in 1958- but the idea was struck down later in the year due to the fact that another sedan line would not benefit Cadillac enough financially. The Vilcea concept itself was later produced in 1968 by a small group of enthusiasts who were able to build an impressive total of 30 cars, each one a custom body built on a '56 Cadillac DeVille chassis.
Oh, this is meant to be in the mid-range polyland, so the wheels are are kinda' choppy and the body isn't loop subdivided. Thanks for understanding! Also, the car doesn't exist in real life (as I hope you know) so don't go googling it...
Oh yeah: Sketchup>V-Ray>Paint.net