roads you though were smooth at 120 are like roller coasters at 150
north of 170 gets ridiculously fast
takes "practice" to even feel what the car is doing at that speed
and staying there for more than a few seconds is not good for your life expectantly
big part of aerodynamic design with high speed cars 150+ is making the car feel/react the same at speed
its easy to put a wing/splitter/diffuser and "think" your adding down force or just add horse power for top end
but to make the car have the same weight bias and under-over steer attributes is why high dollar (ferrari/porsche etc) are not the same as a mustang with a blower under the hood
wind tunnel time is expensive, and most aftermarket parts guys dont even know what one is
