This incredible picture shows a woman who delivered her baby, born in his amniotic sac, eight weeks prematurely in the front seat of her own car.

Raelin Scurry, from Pittsburgh, shared the image of the rare moment, which occurs in fewer than one in 80,000 births, on her Instagram page.

It is known medically as en caul and means the amniotic sac that her son Ean Jamal was carried in inside the womb did not break when he was delivered.

The sac is filled with fluid that allows the growing baby an environment to develop in the womb where it can breathe freely.

When women go into labour, this sac breaks and the liquid drains out. This is more commonly known as the waters breaking.

Miss Scurry was en route to the hospital, when she realised she had just given birth after she pulled her pants down and felt her baby's head.  

The baby was originally still, sparking panic. But he eventually 'rubbed his face' using Miss Scurry's thumb and 'pulled his little hands up'.

Miss Scurry said this reassured her that he was healthy. Ms Scurry, a mother-of-two was being driven to hospital by her fiance Ean on August 5 after she started to have intense contractions. She was 29 weeks pregnant at the time.

She initially dismissed them as just contractions, which tend to occur around the middle part of pregnancy.   pulled my pants off and reached down, sure enough his head was right there. I pushed one time and my miracle baby was here.'

Miss Scurry added: 'When I looked down I realised he was still completely wrapped in the amniotic sac.'

The couple believed they would make it to hospital quicker than an ambulance would reach them, so continued to drive.

The baby was originally still, sparking panic. But he eventually 'rubbed his face' using Miss Scurry's thumb and 'pulled his little hands up'.

Miss Scurry said this reassured them both that he was healthy.

The journey to the hospital took seven minutes. They were greeted by staff running to their car.

Medics opened the amniotic sac Ean Jamal, who weighed 3lbs 1oz, was in.

Miss Scurry added: 'He's doing wonderful all things considered. I know he’s going to be an awesome little man! He is truly a miracle​ baby. We are so blessed to be his parents.