The first time I experienced this was a long tme ago when I was a teen... I had my cousins puppy and he did it... From him, I learned w my 3 that the AC is NOT enough!!! U need to crack the window as well... It calms them down really quickly and relaxes them... Once they relax and slip off to dream land, u can roll them back up... Out of the 4 dogs Ive ever traveled w, this has worked everytime... It is deff worth the irritating noise.
