Clogging the roads is a function of too many vehicles. The failure of the herd to comprehend that is unbelievably bad nowadays. Can't read, can't write and don't care. Driving is just another video game.
To anyone with the idea that high speed works:
So, lets ask a question, speed-demon (said lightly). You don't strive to maintain a 300-700 foot space ahead of you, do you? Your full emergency stopping distance.
You don't ever: change lanes, use the brakes or put yourself into situations where you're surrounded by other vehicles? You do, don't you? I can always pick out the stupid RVers this way.
My guess is that you're also well beyond the braking & maneuvering capabilities of your rig all the time. And have never tested those.
Pickups can barely manage 58-mph, solo, in a difficulty without turning over.
I'm not retired either. I drive 10-12,000/miles month. And it's usually about every two months I can say I see a four wheeler driving without glaring error. Based on speed for conditions and lack of space, it's higher than 99% are in the wrong. All day, every day.
Maybe you're also one who blames the big truck in the left lane for a slow pass. Place the blame where it belongs on the one on the right for failing to manage his end of that equation: cancel the cruise and get the other guy over soonest.
I don't clog up the road due to speed. I manage guys like you all day long.
"Look, there's a crowd up ahead! Let me haul balls up there to join it (make it worse)". That's the guy clogging the road.
God, I hope you're not one of those toyhaulers we truck drivers make fun of: lift kit, off-road tires and running 75-mph. Never a father, forever a baby daddy. Because no father would put his family to that level of risk.
And you don't get there "sooner". Unlike you, I'll already be relaxed on arrival like that FIL while you're vibrating for hours to come. Your vacation starts after mine in that event. How many beers consumed isn't to the point.
A weekend trip means I don't get to travel as far. Hell, in Texas it's a thousand miles in any direction conceivable to somewhere cool in the summer. But some state parks have better shade and a breeze.
I suggest you rethink the excuses you give yourself.