The Bugatti Royale is THE most luxurious car ever produced. Only six copies, all different and therefore unique. It is the car of all records, 4.3 m wide, over six meters long, 12,763 cm3 and 500 hp (it is in fact an aircraft engine !), over 3 tons. And you have to see the debauchery of luxury in the finishes. If you pass through Mulhouse, do not miss the truly exceptional Schlumpf brothers museum, where you can admire the "coupé Napoleon", object of this hanjie.
https://fr.motor1.com/news/174768/video-bugatti-royale-reine-collection-schlumpf/