In looking over some of the evaluations of late model automobiles, very few were given a smiley face where road noise was concerned.
I have ridden in some cars where the rumble from the front suspension, road noise, wind noise were nearly unbearable. Now, maybe in the higher end cars of similar chassis series, the problems may be less.
The question is, is it possible to make a silk purse from a sow's ear? Is insulation enough, or does the problem get into subframe reinforcement, welding, and techniques yet undefined?