Some cars basically have now decide fast cruise function, but why a lot of old drivers need not?

I just was driven oneself swim, my feeling decides fast cruise very good use, loosen right leg, especially interval is measured fast when, had decided speed to be free from anxiety, there should be those who decide fast cruise function designedly when buying a car, so good function need not regrettablly, with knew a few times, who knows with who. I am learn 86 years this, calculate do not calculate old driver