There's an NSL road near me. Mostly straight, but with a fair few changes in vertical deviation.
The speed people take it, they may as well just put 30 signs along it... People will invariably do 30 along there, until they hit the 30 limit at either end, then they'll aim for 40.
A funny anecdote on lessons and speed and stuff...
I was doing an advanced driving course... Over ten years ago? I feel old now... and we were in a 30 limit. Instructor asks me what the speed limit is "30" "So why are you doing 28?!" I then aim for 30. "31?! Are you trying to kill us all?!"
On lane hoggers... Again many years ago, I was travelling along the M4 at night. I was doing "a speed suitable for the journey I was making and the conditions". I was in the rightmost lane as that felt the most appropriate place to be. End up meeting a pastel blue Fiat 500 sat in Lane 3 doing spot on 70. Lanes 1 and 2 were clear. No response to any polite requests to move over, so I end up passing on the inside in lane 1 - giving wiggle room if she decided to move over as I was passing. As I look when I'm going back to Lane 3, I get the dirtiest look from her.
Ok, did I *need* to be in Lane 3? Maybe not, but with the nature of the journey it seemed appropriate to get out and stay out as I was expecting to be overtaking everything else.
Though I've had it the other way, and been in Lane 3 on the M1 doing... "appropriate speeds for the journey" and having cars up my backside and moving over to let them pass. Did have one decide that actually if I'm doing my speed and moving over to let them go that perhaps they should ease off a bit. And had someone undertake me while I was doing my maximum permitted speed.
I guess the takeaway here is that you'll always find someone doing something unhelpful on the road.
Come on... It's a team sport. It's better if we work together.