I bought this car new with only seven miles on it. Today it has 176,000 miles. I have replaced the AC compressor twice, one power steering pump, two alternators, and the head gaskets. The blown head gasket was my fault for trying to drive to next exit ignoring the warning system; a radiator hose had burst. The piston rings were replaced and the heads rebuilt when the dealer replaced the head gasket. It cost $4,000 to repair and the car had 116,000 miles. All in all the car has been reliable. The car doesn't smoke, but does drink a quart of oil every two weeks. If Cadillac came out with a design I liked, I would probably buy another. The Northstar engine is a marvel.
The sound of the engine when you punch the gas.
Give it a softer suspension and a better sound system.