I mean, I have been driving for the last 30 years of my life, I've driven most of the north east of the US. Through highways, timber roads that are little better than muddy paths, country roads that have never been paved, and pretty much everything in between. I've driven 15 hours straight. I've driven up mountains and across (really small) rivers.
Between all the vehicles I've driven in my life I've accrued, got I hate that I know this number off the top of my head, around 350k miles.
Then you have no idea what the rest of us are talking about. Western roads are huge, and travel times are long. When you're driving the ~1000 miles between Denver and Los Angeles, 10 mph difference in speed can make your trip up to 2 hours longer. That's not insignificant, especially if you're trying to do it in a single day.
I'm sorry, did you want an exhaustive list of the roads I've driven? How many times I have driven out west? Which routes? For how long? That's a ridiculous thing to expect from a random on a forum. Should I list out all of the 10+ hour trips I've driven to satisfy you? What level of experience would cause you to retract your simplistic dismissal of my option?
Also, you did not read my post. I specifically said that over the course of those long miles 10mph will cost you 2-3 hours. I literally said that in my post.
You also missed the part where I suggested that no one should be driving for 21 hours, let alone 18.
Let me be clear, trying to drive 1000miles in one day is unsafe.
Between all the vehicles I've driven in my life I've accrued, got I hate that I know this number off the top of my head, around 350k miles.
So yeah, I do have experience with such roads.