There is no way to push a car to the limit on the street. If you guys want to see what your car is made of, and you as a driver as well, you should try HPDEs with NASA or the other car clubs out there. I've done it with my WRX, 350Z, and I can't wait to do it with my 370Z. It's an absolute blast!
Check out this video...
YouTube - Subaru WRX and 350Z at Road Atlanta (HPDE 1)
It's a lap in my WRX and then a lap in my 350Z at Road Atlanta.