There are plenty of highways in the Northeast where traveling at 78 mph you'll get passed by about as many cars as you pass. On a recent 750+ mile each way roa

There are plenty of highways in the Northeast where traveling at 78 mph you'll get passed by about as many cars as you pass. On a recent 750+ mile each way road trip, I averaged 70 mph on a door-to-door wall-clock basis (start the timer, drive 750 miles, stop the timer, divide). That was with three short stops one way and two on the way back, and we got passed by almost no one.