The all-wheel antilock disc braking is strong and stable, but panic stops do result in considerable dive. Both models come with a standard bench seat up front, while the Ultra has the optional fli-down center console, which is like having a section of the Great Wall between you and your front passenger. While large almost beyond words, the feature provides significant additional storage and two of the best cup holders in any vehicle, regardless of type. The Park Avenue offers traditional American-style room to match its power. Head and leg room is considerable, and more than sufficient for three full sized adults to sit comfortably in the back.
All positions are comfortable, though they lack good lateral support in turns.
The front safety belts are anchored to the seats, but I found that made them harder to reach and less likely to go comfortably over the shoulders of taller drivers. The dash layout is uneventful, but works well enough. Outward vision is excellent forward and to the sides, but only good toward the rear, due to the thick trunk. At least the roomy trunk has a low liftover. The standard OnStar telematics system, StabiliTrak and tire-pressure monitor on Ultra and optional on the base model are worthwhile features.