"Fast" can be subjective. Just tell them the GT86/FRS/BRZ, with a simple upgrade of brakes and tires, did this at the Nurburgring Nordschleife:
[ame="https://www.youtube.com/watch?v=bXuGhEE8t1U"]RSR RAW: Toyota GT86 - Nurburgring Nordschleife - YouTube[/ame]
GT86 clocks an impressive time of
8min 27sec placing it above many more pricey/powerful cars:
http://fastestlaps.com/tracks/nordschleife.html
It beat:
BMW M5 8:28.00
Porsche 911 Carrera 8:28.00
Porsche 911 Carrera Cabrio 8:28.00
Porsche 911 Carrera RS 8:28.00
Porsche 911 Carrera 8:28.00
Nissan Skyline GT-R R34 8:28.10
Nissan Skyline GT-R R33 V-Spec II 8:28.10
Mercedes CLK 55 AMG 8:29.00
Audi S4 Avant 8:29.00
Audi TT-S Coupe 8:29.00