In the video the woman can be heard screaming as she faces the rear window with her knees on the passenger seat.
Her husband, who is driving, is filming the entire thing as they speed down the road.
As the video begins he can be heard asking: "Can you wait like two minutes?"
It is unclear exactly what his wife replies but it becomes apparent that the baby is well on its way out.
He adds: "Hold on, wait, wait, wait," but his wife keeps screaming and says "I don't know what's happening".
Seconds later crying can be heard and she is holding her new born daughter in her arms.
After all the drama unfolds in the front of the car he pans the camera round to the back seat to show their other kids looking on in amazement.
The astonishing footage, thought to have been filmed in Dallas, Texas was uploaded to social media and has already drawn thousands of hits.
Posted on the Instagram page @theswinneyseven, the video was captioned: "There was something beyond special, about getting to deliver my own baby.
"No doctors or nurses, no lights, or busy people, no one interrupting a moment that should be the most special moments for families as they bring life into the world.
"The pain was there, but the joy and peace that followed in those minutes we got to spend alone with our sweet girl was more rewarding then anything I could have asked for.
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