in chronological order :

1. Porsche 911 - (1963-present) - an iconic supercar
2. Lamborghini Countach - (1974-1990) - the first definitive supercar
3. Ferrari F40 - (1987-1992) - the first production car to cross 300 kmph.
4. McLaren F-1 - (1992-1998) - the most legendary supercar of all time
5. Bugatti Veyron - (2003-present) - played the numbers game. a bit too well.