OK... I have put about 50 miles of freeway on my GV... No vibrations at all, plenty of speed to keep up with 65 mph traffic. Maybe I am getting paranoid in my old age, but I feel awfully small out on the super slab. Even though I used to ride a Rebel all the time back when I was much younger. But this machine is definately built to handle this ride.
I will not commute until I have 1000 miles on the GV. I may be over cautious, just want to make sure I know the machine as much as possible.
My longest ride so far has been about 20 miles round trip. I really do like to ride, just lack the time to do it... I coach baseball in the summer and football in the fall. So my time really is short.
But, back to my point... The GV is a fine interstate machine...