At highway speeds, tire and wind noise dominate over engine noise, even for ICE cars. That "roaring" sound you hear emanate from a highway is actually due to th

At highway speeds, tire and wind noise dominate over engine noise, even for ICE cars. That "roaring" sound you hear emanate from a highway is actually due to those two factors. Tire noise in particular is affected by vehicle weight (I suspect--don't quote me--as a square of the weight). EVs are MUCH heavier that comparable ICE cars. The hummer EV weighs 9,000 lb (!). So they are extremely loud at highway speeds.