Complex sentence: The one made for the Führer changed Abyssinia (todays Ethiopia) to Italian East Africa, was nearly the size of a Volkswagen car and manufactured at a huge cost, while the other was made of standard wood with no special features.
Split into simpler sentences: The one made for the Führer was nearly the size of a Volkswagen car and manufactured at a huge cost. The other was made of standard wood with no special features.