Over a 50 year span, my new STS is my 47th car and without doubt it is the best one I have owned. Its' handling and all out drivability surpass anything I have ever driven, including 8 Mercedes and 3 Porsches, even a Lotus. And at 75 mph, it gets 24 miles to the gallon. Cadillac is again the standard of the world. All this for $50,000. Imagine!
In just a few words, handling, performance, and economy.
It needs a locking gas compartment door, and simplify computer input, for example to change the time at daylight savings.