No. There is no logical connection between riding in the backseat and adult stories. It might be a baseless superstition or just a random thought with no real basis in fact.
It could be pure coincidence. Maybe on a few occasions, some people in the backseat happened to start sharing more mature - themed stories, but it was just a random occurrence and not a general rule.
Once upon a time, a young girl was sitting in the backseat of her family's car on a long road trip at night. She suddenly felt a cold hand on her shoulder. When she turned around, there was nothing there. But she could still feel the icy touch. Every time she tried to tell her parents, the radio would start to static. She was terrified for the rest of the journey.
Once upon a time, a young woman was driving alone at night. She stopped at a gas station. When she got back in her car, she felt a strange unease. As she drove, she thought she heard a faint breathing from the backseat. She glanced in the rear - view mirror but saw nothing. Suddenly, a hand reached out from the back and grabbed her neck. The murderer had been hiding there all along, waiting for the perfect moment to strike.
The 'killer in the backseat' story might go like this. A character gets into their car, unaware that there is a killer hiding in the backseat. As they start driving, they might notice strange noises or movements. Maybe the killer reveals themselves and starts to threaten the driver. The driver then has to think quickly to escape or fight back, like trying to crash the car in a way that incapacitates the killer or finding a way to call for help while being held at knifepoint or gunpoint.
There was a girl who picked up her car from the mechanic. Unbeknownst to her, a killer had sneaked into the backseat while she was signing papers. As she started driving, she smelled a strange odor. She was about to turn around when she saw the glint of a blade in the mirror. The killer hissed at her to keep driving. She was so terrified that she could barely think. But then she remembered a self - defense move she had learned. She quickly slammed her elbow back into the killer's face, causing him to drop the knife. Then she opened the door and rolled out of the moving car, getting away from the killer.
Without knowing the actual story, it's difficult to determine the significance. Maybe he is the key character who drives the plot forward, perhaps he holds a secret or has a special mission while sitting in the backseat.
"She Shocked the World After Married to a Repairman". I strongly recommend this novel to you. The plot is the first place. The male protagonist is super rich and dotes on his wife. The female protagonist is a scumbag and independent. The story is full of suspense and touching plot. It won't disappoint you. I hope you like this fairy's recommendation. Muah ~😗
One possible 'wife backseat' story could be that the wife preferred the backseat because she could stretch out more comfortably. So during family outings, she would always claim the backseat. It made her feel more relaxed, and she could also keep an eye on the kids better from there if they were also in the car.