There are some brands of bicycles that can cost more than the down payment on a car. Why? Surely making a bike lightweight and reliable isn’t so difficult that it warrants that price? Is it just the brand name or maybe it has to do with customization options?
Did they encounter 6 inches of snow in Africa?
No, just a thin salt crust over deep mud:
https://en.wikipedia.org/wiki/Top_Gear:_Botswana_Special
https://en.wikipedia.org/wiki/Makgadikgadi_Pan