I am not sure the problem Noel1945 experienced is the same as mine (see my post below back in 2015). It still have been happening (even in 2016) ONLY when temperature is below freezing less than 20F to single digit temperature or a lot of wind with freezing temperature. And it only have happened when the ICE is kicking in. When it has happened and when it have gone back to EV, that strange problem disappear until next time.
There is only a workaround (for my CMAX at least): release the gas pedal and ease it back in OR press the gas pedal further to accelerate the car. After one of those workaround, the rattling noise with the high screeching sound from the ICE and high vibration that start from the dashboard to the vibration of the steering wheel will go away (until next time).
I tried to accelerate from 0 to 40MPH within 10 seconds on a clear road (I posted in one of posts), and its sound was normal (although louder than usual) and there was no the rattling noise or high screeching sound from the ICE or high vibration on the steering wheel.
Also, took to the dealership, and of course, they said they could not find the problem since there were no below freezing temperature on the service day.