Regarding the perception of movement and speed, if you try to estimate your speed without looking at the speedometer:
It is very likely that you will hit the speed at which you are really driving, since drivers are generally very precise when estimating speeds .
You will probably tend to perceive a slower speed than you really are (for example, you may think that you are traveling at 120 km / h when in reality you are going at 150 km / h) .
You are likely to hit your actual speed, but only if you drive a very modern vehicle .