200mph
I'm no idiot, 200mph is fuckn fast. Most modern supercars can go over 200mph. Some way over (the bugatti veyron hits a top speed of 257mph, thats over 400kmph!) 200mph is usually considered the top speed milestone of any performance oriented car.
"Damn son, did you see that Nismo R34 hit 200mph?"

"I'll holla!" :P