Carol Roux has had the Unimog bug for almost 60 years. Today, he and his son own seven Unimogs, including his father's U 411 returned to roadworthy condition. But he prefers to drive the U 406 most of all. We ride in it further east where farmland and settlements spread. But nature is the focus here as well: For example, in the Kruger National Park, which covers an area of 20,000 square kilometres, roughly equivalent to the size of Slovenia.