We picked up our 2017 Volt a week ago. It's a Premier with ACC. It has what I consider to be a serious safety issue regarding cruise control, but I don't know if it's just our car, others with ACC or all of them. Here's the deal... according to the manual (and with every other car I've owned) if you have cruise control set and you press and hold the +RES button, the car will accelerate. When you let go of the +RES button, the cruise control is supposed to set to the current speed. So, if CC is set to 30 and you hold +RES until the car accelerates to 40, when you release the +RES, the new CC speed should be 40, right? Not in our Volt. The car will continue to accelerate to 50, 60, 70 and even 80 MPH. The DIC shows the new CC speed and in our car it shows 80. It's like when you hold a key down on your computer and several key presses go into the type ahead buffer. When you release that key, a bunch of those characters still show up. I've notified my dealer, but am wondering if anyone else has experienced this.