Megosztott hang

About two years ago, I was driving home from a family reunion pretty late at night, and the drive was about two hours. I didn't stay the night because I had to be back for work the following day. Most of the drive was on roads with dense bushes and trees on either side - the real creepy ones you see a lot in movies. Anyway, I had been driving about 45 minutes, and I was starting to get really tired. You know how sometimes you just suddenly become really tired, out of nowhere? Well yeah, that hap