Good For: Lots of unused features. It was somewhat hard to imagine what makes the S80 worth $39k, but that is because the appeal of Volvo is in safety features - features that you hope never to activate. My time with the S80 went by without any incidents demonstrating standard features such as adaptive brake lights, auto-braking, and occupant protection. What was demonstrated is a nice, comfortable sedan. As a flagship sedan, all the expected luxury features were present.
Compromises: The inline-6 produced a good amount of power even in naturally aspirated form, but the front-wheel drive setup produced a bit of torque steer. Volvo also seems to be jumping on the electric parking brake bandwagon - yuck.
Overall reaction - Thumb down: People who like the idea of electronic driving aids may find the list of Volvo features worth the price paid. But even if I liked those features, I would pass on any "luxury" car with such noticeable torque steer and an electronic button for a parking brake.