After reading my post, please allow me to clarify:
The car drives great at low speeds, and small road irregularities are absorbed nicely. On the highways, if you get one of those dips in the road where you are going 60-70 mph and there is just a fairly gentle dip in the pavement is when the car handles poorly. The front and rear seem to wallow at different levels and this is disconcerting and feels less than ideal.
The tires show no signs of cupping, etc.