My 2005 Cadillac STS is an unbelievable car. The handling, ride, and power are better than BMW, Lexus, Mercedes or any other import car. I test drove a Lexus LS 430 right before the Cadillac STS and the ride quality was exactly the same, which really surprised me. Its almost as if GM duplicated the ride quality.
Ride quality, Handling and Power.
This car is definitely a 10. The doors are a composite material to resist door dings. this is truly a remarkable vehicle.