The door handle thread reminded me of this phenomenon.....
I started the engine the other day on my coupe and left the car for a bit. When I came back I went to open the door and felt air rushing by the handle. I guess when you put air in it has to come out but was surprised that the exits are the door handles !

 

Having had my doors apart I don't see how any air could escape through the door handles, or even enter the door.

 

I wish I had this option. When temps reach 100 F in the summer those handles can get really warm.

 

just like a house, any little gap leaks air. the avg house looses enough air infiltration to equal leaving the front door wide open according to LEEDS certifications. The air gouse between th glass and inner seal and out teh handles. Its not the only place either, there are vents in most every cars trunk. you needs these to vent air, close them off and it makes it very hard to close the door with windows up