custom vehicle manufactured for an expedition to explore the Belgium Congo in 1938; for when you wanna explore the jungle but can't possibly part with the amenities of your penthouse
The Belgians made so much money from slave-harvested rubber that they indeed built decent highways and other infrastructure. Of course, those weren't for the indigenous population, only motor vehicles could use them. After the revolution, the nation had no finance, expertise and stability to maintain them.
And I'm sure everyone traveling in such a vehicle would be happily welcomed by the local population considering the friendly nature of Leopold mere decades earlier.