who drives 60 on the hi-way?
you subject yourself and car to everybody on the road which is dangerous today with all the jamokes who cant drive
lots of looky lous checking out the ride fools txting atleast around here anyway
vs
staying with the traffic maybe 40 cars a trip vs 1000 cars going by you
Where I live, 75-80 is "flow of traffic" speed once you get out of town. Anything lower than 65 is dangerous. Lots of long straight roads and people in a hurry.