Leather seating surfaces and real wood trim set the tone. My test car had softly- padded front bucket and contoured bench rear seats. Five people fit in comfort. The heated front seats are power-adjustable with memory on the driver's side. A convenient front console has cupholders, a power point, a notepad holder, and plenty of storage space.
Rear passengers get heater vents, seat storage pockets, ashtrays and lighters, and vanity mirrors.
Traction control is standard on the Ultra. This is absolutely not the case with the latest Buick Park Avenue. Even with the standard suspension, bumps and chuckholes are dealt with and then forgotten. The ride is as soft as expected, but correct damping keeps control. The Ultra's magnetic variable-assist steering is light but direct.