I guess you do what you have to. I drove 11.5 hours (760 miles 1200 km) straight with only stops for fuel and restroom breaks. From Chattanooga Tennessee to Dallas Texas.
I drove there on Tuesday. Same way. My wife was riding shot gun and he she helped me stay alert. She made me snacks and drinks to keep me going. I also bumped up my C/L and that helped a lot. We went for the funeral of her great aunt she was 92. In the last 30 years we had went there to see her 10 times and my wife called her 2 times a week for the last 10 years. We also visited other relatives while we were there. We made that trip the first time 43 years ago. Back then it was a 16 hour trip. Better roads and bypasses have helped cut the time for the trip. I slept 2 hours and am up and going. Just another day.