Fatigue is real and it sneaks up on you. Don't be afraid to pull off the road and close your eyes for 20 minutes. You don't even have to sleep, just resting for a few minutes is super helpful.
Similarly, use your car's automatic features when possible if they reduce fatigue. In your case, that probably means using cruise control. I've found that if I don't have to actively manage my speed, I get less tired.
Assuming you're in a tight hand drive country: Keep right except to pass!
I had a phone with a back cover that popped off without screws. It was the stupidest fucking design.
Drop your phone? Phone explodes and battery falls out.
Put your phone in your tight pants pocket wrong? Back cover comes off.
Toolless designs are great for things you access frequently. The only time I had to open the back of that phone was to put a sim card in it. Phones should be more repairable, but I want them to be held together with screws so they don't fall apart during the 99.9999% of the time they're not being opened.