Sounds plausible enough to us. The front chairs are obviously designed for comfort, as they are relatively soft and lacking in side bolstering. Heated front seats, optional on DeVille and standard on DHS and DTS, are equipped with dual-zone controls providing heat either in the backrest only or heat in both the backrest and seat cushion area. The seats also have a lumbar massage feature that could prove useful on long trips. Two adults is the optimum number for the rear seat, but three can take to the back seat without much difficulty.
Front passengers get both front and side air bags, while rear side air bags are optional.
Perhaps something from the Cadillac's option list will compensate. Like the James Bond movie franchise, no Cadillac would be complete without an array of gee-whiz gadgets. If you have ever had any seat time in a Lexus LS 400, it will be immediately clear what type of vehicle Cadillac aimed for when designing the DeVille's interior. Rip-off or not, the button layout works. Controls are easy to find and use.