To put the complicated calculation in a nutshell, travel per person 16 years old and over averaged about 12,497 miles for the first seven months of 2019. The full year average for 2018 was 12,483.
So despite there being more cars on the road and population growing and a so-called economic boom, road travel has plateaued.
For another look at it, see Jill Mislinski here, whose population-adjusted road travel chart also shows that the flatlining began with 2017 and that 2005 was the peak year.
You are free to move about the country, but you are not, at least not like you were in a car.