Haha I'm sure you're testing your carrera, no?
Oh well there are a couple of streets but still you need to drive and look around before you hit some speeds.
I once got 270 KM/h in a murcielago in Um Al Basateen which is right behind Zaytoonah university ouna University.
easiest way to get there, is drive all the way to
@Zaytoonah university and take the first right after it. keep going till you see a huge ass street .. take some U-turns and check it out