A supercar – also called exotic car – is a loosely defined description of street-legal, high-performance luxury sports car. Since the 2000s or 2010s, the term hypercar has come into use for the highest performing supercars. Supercars commonly serve as the flagship model within a vehicle manufacturer's lineup of sports cars.
In the United States, muscle cars were often referred to as "supercars" during the 1960s.
The Lamborghini Miura, produced from 1966–1973, is often said to be the first supercar. By the 1970s and 1980s the term was in regular use, if not precisely defined. One interpretation up until the 1990s was to use it for mid-engine two-seat cars with at least eight cylinders (but typically a V12 engine), a power output of at least 400 bhp (298 kW) and a top speed of at least 180 mph (290 km/h). Other interpretations state that "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" or regard exclusivity (i.e. limited production volumes) as an important characteristic.
It is also claimed that the definition of a supercar has always been subjective and a matter of blind prejudice.
During the 1960s, cars that are now considered to be muscle cars were then referred to as supercars.: 8 The term was sometimes spelled with a capital S. In 1966 the sixties supercar became an official industry trend.: 8 For example, the May 1965 issue of the American magazine Car Life includes multiple references to supercars and "the supercar club" and a 1968 issue of Car & Driver magazine refers to "the Supercar street racer gang" market segment. In the model name of the AMC S/C Rambler, the "S/C" is an abbreviation for "SuperCar".
Since the decline of the muscle car in the 1970s, the word supercar came to mean a car that has high performance (such as those made by Ferrari or Lamborghini): 5 interpretations of the term are for limited-production models produced by small manufacturers for enthusiasts, and, less so, standard-looking cars modified for increased performance.
A more recent term for high-performance sportscars is "hypercar", which is sometimes used to describe the highest performing supercars. As per supercars, there is no set definition for what constitutes a hypercar. An attempt to define these is "a limited-production, top-of-the-line supercar with a price of around or more than US$1 million."
With a recent shift towards electrification, many recent hypercars use a hybrid drivetrain, a trend started in 2013 by the McLaren P1, Porsche 918 Spyder, and LaFerrari, then continued in 2016 with the Koenigsegg Regera, in 2017 with the Mercedes-AMG One, and in 2019 with the Ferrari SF90 Stradale. 
Hypercars will also be able to be used as a base for Le Mans Prototype cars when rule changes come into effect from 2021.
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- Wasef, Basem (2018). Speed Read Supercar: The History, Technology and Design Behind the World's Most Exciting Cars. Motorbooks. ISBN 978-0760362921.
"the outlandish Lamborghini Miura, which is widely considered to be the first car to legitimately deserve the title
- Codling, Stuart (2015). Lamborghini Supercars 50 Years: From the Groundbreaking Miura to Today's Hypercars – Foreword by Fabio Lamborghini. Motorbooks. p. 4. ISBN 978-0760347959.
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- Ward, Ian (1985), Secondhand Supercars, London Motor Show "Motorfair 1985" Official Catalogue
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The term muscle car wasn't heard much hack when these vehicles were first hitting the market. In those days, the enthusiast magazines favored the term supercar.
- Severson, Aaron (27 July 2009). "Super-iority: Defining the Supercar and Muscle Car". ateupwithmotor.com. Retrieved 16 January 2018.
what we now think of as muscle cars were more commonly called "Supercars," often (though not always) spelled with a capital S.
- "Rambler Scrambler". Car Life. 16: 33–36. 1969. Retrieved 11 September 2014.
- "Rambler Scrambler". Car and Driver. 14: 84. 1968.
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- Cheetham, Craig (2006). Supercars. MotorBooks/MBI. p. 6. ISBN 978-0-7603-2565-0.
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- Constantine, Chris (26 December 2017). "The Best and Worst Hypercars of 2017". thedrive.com. Retrieved 25 December 2019.
- "McLaren F1 – The First Hypercar?". thehypercars.com. 6 July 2018. Retrieved 12 March 2019.
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