For Antarctica, there are several factors that contribute to significant driving times. Primarily, it is the time, energy and exposure setting up a camp at -40. As a result, you drive for 18-24 hours straight, and then stop for 10-12 hours. You cook, make water, sleep, etc. Once on the plateau, which is 9,000+ feet, there is little change in topography, so you just drive. Other factors include limited fuel, and since you never shut the trucks off, you are better off turning jet fuel into KMs instead of just heat and idling. Some will find it interesting that even idling uses quite a bit of fuel, as not only is the engine running, but the Webasto must also run. At idle, the engine actually looses heat to the point of being a risk. In the mountains, we drove less and camped longer, took more photographs, etc. It was a wonderful experience.