Two thoughts: (Yes, I have more than 1 thought in my head!
)
1 - Street legal track car.
2 - The term Supercar has two meanings: One of the current day, and one of the day of past.
In the 1960's, many of the muscle cars were actually referred to as Supercars. Think 426 Superbird, 440-6 M code 69.5 A-12 cars, Daytona, Hemi Cuda's, WO23, RO29, etc. These cars were referred to as Supercars in their day compared to the muscles cars (340, 383, 440-4 bbl powered cars).
Sometime during the 80s, Supercar and Exotic somehow got smeared together a bit and used interchangeably in North America. I would not really call the Viper an exotic, but I would call it a Supercar.
According to Wikipedia, the definitions are as follows:
Supercar is a term used most often to describe an expensive high end car. It has been defined specifically as "a very expensive, fast or powerful car".[1] Stated in more general terms: "it must be very fast, with sporting handling to match," "it should be sleek and eye-catching" and its price should be "one in a rarefied atmosphere of its own".[2]
However, the proper application of the term is subjective and disputed, especially among enthusiasts. So-called vehicles are typically out of the ordinary and are marketed by automakers to be perceived by the public as unusual. The supercar can take many forms including limited production specials from an "elite" automaker, standard looking cars made by mainstream companies that hide massive power and performance, as well as models that appeal to "******** enthusiasts" from "manufacturers on the fringe of the car industry."[3]
Exotic definition according to dictionary.com:
1 - of foreign origin or character; not native; introduced from abroad, but not fully naturalized or acclimatized
2 - strikingly unusual or strange in effect or appearance
3 - of a uniquely new or experimental nature
Exotic tends to refer to something fragile, uber expensive, and something you never use as it is too unreplaceable. The Viper does not fit that image at all. These cars are built to drive, have durability, to track, to show, to drive daily if one so chooses. Viper is not an exotic.
I say proudly American Supercar.