I drive my DeVille on the open road and in the city. It has the smoothest ride ever. I drive 30,000 miles per year. The DeVille is the most comfortable car that I have ever owned. Its gas mileage is dependent upon the speed you drive. I have driven it 100,000 miles with few problems, none serious. I have never been left sever stranded or towed etc. I had problems with the air conditioner fan and a few interior pieces had to be replaced. Otherwise, this is a very good, A+++ car.
The very good handling, excellent brakes, and how it is so smooth, quiet, and easy to drive.
It should have XM radio from the factory. Also, it should have memory mirrors and seats.