One of the revelations of driving through the North American desert is that tumbleweed actually exists and is not just a figment from the stereotype drawer of Hollywood script writers. Seeing these balls of dry plant, well, tumble across the street is such an inspiring event, that a new rule of travel demands invocation: On any such occasion, you have to yell “Tumbleweed” at the top of your voice.

And no, driving hundreds of miles all alone through the desert does in no way affect sanity. Why are you asking?