This horrifying X-ray shows what can happen if you have your feet on a dashboard during a car crash.
The warning is from Dyfed Powys police officer Ian Price who is urging people to stop doing it.
He says: "Here is an X-ray of horrific injuries sustained to the front seat passenger who had their feet on the dashboard at the time of a collision.
"If you see your passenger doing it stop driving and show them this."
The woman in the X-ray did survive but her injuries have been described as "life changing".
There is currently no law that stops a passenger from putting their feet on the dashboard while the vehicle is moving.
But a police officer could accuse you of impeding the operation of a motor vehicle because the passenger would be blocking the passenger side mirror.
After the police officer shared the picture on Twitter lots of people said it would definitely stop them doing it.
One said: "I am 60 and have put feet on dash many times in my life.. I know I will be stopping it now and will be sharing this post around everyone I know."
Another said: "Thanks for this, I’ve been known to do this occasionally but not anymore!!"
