The two Sharons in the back seat start making out.

Look in the rear view mirror.", said Sharon 3 to Sharon 1.

"Wow, that is super-erotic. It's me kissing me!", exlaimed Sharon 1, nearly veering the car off the road at the sight of her doubles engaged in a deep kiss and mutual feel-up session in the back seat.

"Let's pull over so we can watch,", said Sharon 3, feeling her pussy grow wet as she talked.

Sharon 1 pulled the car over to the shoulder and the two Sharons in front turned as one, to watch their doubles necking in the back seat.

"Yummmm. I could watch this all day."

The other Sharon reached over and softly stroked her twin's arm as they watched. The Sharons in the back were crushing their huge breasts together and writhing on top of each other in the back seat. Their moans grew louder as they sustained a sealed lip lock for minutes at a time. Their tongues could be seen dancing together through their cheeks and the swish of soft skin against identical soft skin filled the car.

"I can't take anymore of this. Kiss me, other me!", whispered Sharon 1 hoarsely to her horny doppleganger.

Without a word, the other Sharon fell on her counterpart and they reclined atop one another across the front seat. Now there were a pair of identical, buxom women making out heavily in the back seat, and repeated exactly, the same woman and her exact duplicate writhing together in the front seat.