Everyone makes a lot of noise about how silent the Tesla Model S is upon acceleration, but it's hard to truly grasp the degree of quiet until you hear it in action. The Model S in this video accelerates up to 120 MPH, and until the road noise takes over all you hear is a little "whir."
In any other car, even a little four banger, you'd be met with some sort of growl or scream or complaint from the engine. In contrast, this just sounds like a laser gun charging up.
Oddly enough, I've got no complaints there.