Absolutely huge rear doors are designed so you can easily access either the rear seats, or the seats facing the rear seats. Either way, once you're in, you can recline to almost 45 degrees.
One thing to ponder while your chauffeur's definitely not using all 523 hp from his or her side of the partition: is it possible to touch anything that's not leather without straining yourself?
Aaron Miller is the Rides editor for Supercompressor, and can be found on Twitter. He would definitely take a nap on the autobahn in this.