Ear Pain Vehicle What Happened When Lowered Back Windows On Rav4 @ 70mph-caused Helicopter Noise,pressure Change & Pain In Ears

What happened when lowered back windows on Rav4 @ 70mph-caused helicopter noise,pressure change & pain in ears - ear pain vehicle

We drove our new Rav 4 last night on the motorway @ 70 mph, my husband dropped the glass on the back for air circulation and WOW, this was not it, what to do. We started to hear loud noises and made both of our ears hurt. Since this is a new vehicle, it was dark and not comfortable with all controls are dis-annoying.
Finally, it was found that what happened when he went below the rear window (before the window even more). I was 2 years of engine blow .... but I've never heard of such a thing before .... Why this happened and who came to New York to another?