In the testing literature, the term load testing is usually defined as the process of exercising the system under test by feeding it the largest tasks it can operate with. Load testing is sometimes called volume testing, or longevity/endurance testing.
Keep your taste buds awake, drink an energy drink. This may raise your level of alertness for a reasonable amount of driving time. Suck or munch on an apple, orange, or even a lemon to keep taste buds awake. The more tangy the food item the better. (Pull over somewhere safe before eating anything that you can't just pop in your mouth, however.
drive up can be very difficult on your car depending on car you have and drive down, they make you stop and rest your brakes for at least 1/2 hour. train does not go all the way to the very top...a little less altitude. Drink a lot of fluids. Stop at the the half-way point for a while. Take headache pills with you .