I think you are being unrealistic here.
0. "it makes almost no sense anywhere in the U.S." and "Yes there are areas where you could" in the same post is inconsistent. I'm just going to ignore second and respond to the first.
1. There are wide stretches of 4 lane (2 lanes each way with a divider well above the width of 2 lanes) that are perfectly flat and have visibility of 2 miles assuming no atmospheric interference (rain, snow, fog, dust storm).
2. Much of these roads have a higher speed limit than the 55 you quoted.
Texas 75; 80 or 85 on specified segments
Utah 75; 80 on specified segments
Arizona 75
Montana 75
Kansas 75
Idaho 75
Nevada 75
New Mexico 75
Wyoming 75
Indiana 70
and on and on
3. You don't have to expect it on a road that straight with that little traffic. You and the car you are passing might be the only car on that strip of road. Both drivers will have several minutes to watch the passing occur (assume the slower driver at 80 and faster driver at 120 the overtake speed is 40 mph, if you see the car at 2 miles ahead he'll see you as you pull away until you are 2 miles ahead, 4 miles worth of overtaking at the 40 mph difference is 6 minutes, if the difference in speed is less you'll be seeing each other longer, if the visibility is worse you'll see each other starting at a shorter distance but likely the overtaking will happen with a lesser speed differential.) Go ahead and drive some of these roads west of the Appalachian mountains / Piedmont. There are plenty out there even some that are east of the Mississippi river that would be very safe for driving above 100 mph.
If that driver can't figure out the faster car is going to pass him with several minutes to analyze the relationship something is wrong with that driver that makes it a non issue what country you are in.