The interior is pretty spartan! There's nothing unnecessary inside, but all the essentials are there: gauges, GPS, harnesses, and so on.
The seating arrangement is functional and clever. Since this truck is a SuperCab, there was room to slide the co-driver back a long way. Steve's Mastercraft 3G pilot's seat is much further forward than the co-driver's seat.
Also note the headrest for the co-driver's seat. It's positioned up where it will catch the back of your helmet, instead of just the base of your neck.