The term "supercar" in my opinion is a relative term and must be taken in the context of what's available on the market today. A supercar is a car that is significantly outstanding in design, engineering and performance relative to other already outstanding cars. The original Ferrari Testarossa was a supercar in its day. Today it is no longer outstanding in performance or engineering, but is still a design standout. It would get schooled by a number of "normal" cars today that are far more advanced and offer more performance.
BMW CCA member - Peachtree Chapter