I went for a fairly long drive this last weekend and couldn’t figure out why I was so much more tired after driving back than after I drove down there. I figured out though that on the way down there were hours when the only car on the road was mine, but on the way back I only had stretches of maybe fifteen to thirty minutes when I was the only car on the road. I had to be a lot more aware on the way back then I did on the way down. When you are driving by yourself you can relax somewhat and just enjoy the drive but when there are other cars around you have to pay close attention to them as drivers are sometimes prone to do stupid things at the most inconvenient of times, especially if you aren’t paying attention to them.