With an electric vehicle being so quiet it frustrating and annoying to have so much road noise with this vehicle, I sincerely hope GM does something about it in the future. I know additions add weight and cost but for the price I would like to add a couple of options as I am not as concerned about getting every last drop of efficiency from the vehicle. I would gladly pay for a better stereo and a quieter cabin and be happy with a few less KM of range. This vehicle already compares favorably performance wise with my 2003 Monte Carlo which is 400 lbs lighter, I would gladly add 50 more for some better sound proofing. Does anyone have suggestions on quieter tires, or mods to quiet the cabin, again, I am willing to lose some range. I do love the savings in fuel, I spend about 1/4 the price for electricity a I was doing with gas.