What defines a hypercar?

Answer 1

Answer 1:

The Hypercar is a design concept car developed by energy analyst Amory Lovins at the Rocky Mountain Institute. This vehicle would have ultra-light construction with an aerodynamic body using advanced composite materials, low-drag design, and hybrid drive.[1] Designers of the Hypercar claim that it would achieve a three- to five-fold improvement in fuel economy, equal or better performance, safety, amenity, and affordability, compared with today's cars.[2]

Answer 2:

From wikipedia:

"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] [...] Occasionally, the term "Hypercar" is used for cars that might be considered beyond the definition of "Supercar". This is even more difficult to define."