Qualifications to be a SuperCar

I first started thinking about this when I saw Top Gear's test drive of the Audi R8 (with the V-8). They kept calling it a supercar, but I had always thought of a supercar as a car that had a top speed of at least 200mph. I love the R8, but with the V-8 it can't even hit 190 and it's 0-60 time is mid to low 4 sec range...those aren't supercar numbers if you ask me.

So what do you think qualifies a car as a supercar?

....no, I don't have any questions about PCB