And shifting 180 degrees to the original topic, a half tank of fuel is good for around 3 hours of driving. That's plenty long enough to sit without a break for a few minutes so that's the time to begin making your next fuel stop. You've got a good hour to find somewhere to your liking and still have more than ample fuel reserve. You stop for 10 minutes, fill the fuel tank, empty your personal tank, walk a couple hundred yards in total to reduce the chance of clots and hit the road for another 3 hours. Then you repeat the process. People literally die from blood clots. One significant factor is sitting for long periods of time with no activity. If you can't afford 10-15 minutes every 3-4 hours there is a major problem in scheduling.
Once you deliver and move to your layover area, your next stop should be for fuel. That way you are ready to go the moment they call you with that pickup in one hour 90 miles away, like they love to do. Start driving, 3 hours, fuel, driving, 3 hours, fuel, driving, 3 hours, fuel eventually followed by deliver, relocate, refuel. Better for your health and you'll never run out of fuel.