This reminds me of an incident that happened here, back in the '90's. Back before cell phones and everything digital, it was very entertaining to listen to the local police on the scanner.
One evening, a guy was arrested. It's so long ago that I don't recall what the original arrest was for, but he was cuffed (behind his back) and placed in the back seat of a police car, a car with a 'cage', or a fence type barrier between the front seat and the back. The arresting officer was still outside the car, getting witness statements, bullshitting with his fellow officers, or some such shit, and he left the car running, for the comfort of his prisoner.
The perp was quite nimble, and quickly 'stepped through his arms' and had his cuffed hands in front of him. He was also quite thin, and was able to flatten his body and wiggle between the VERY slim space at the top of the seatbacks and under the 'cage'. Before the cop knew what was happening, the guy threw the (running) police car in drive and hit the gas!
This guy led 5 police departments on a high-speed chase through 3 or 4 townships. In all, there were more than 60 cop cars involved in the chase. The fun ended when the guy broadsided a car full of innocent victims on the Boulevard in Philadelphia. The police took the dude back into custody, then transported him to the hospital for the injuries he sustained in the wreck.
After the guy was treated for his minor injuries at the hospital, they took him to the local police station and threw him in a cell. Half hour later, when they went to check on him, they found the cell empty! This very flexible guy had climbed out the open window in the cell -- the window that was always open, because it was covered by a wooden 8' privacy wall that stood outside, just 5" from the building. Once again, this guy was able to flatten himself, somehow, to squeeze through that tiny opening.
So once again, some VERY, VERY embarrassed cops sounded the alarm, and this time police from 5 surrounding townships, the state police, police scent dogs, and not one, but two helicopters flooded the area, searching for the guy. Now this guy was pretty easy to identify, considering he was wearing a hospital gown and nothing else, other than an ER wristband, so within a few minutes the police got a call that the guy was spotted running down the Pennsylvania Turnpike, which runs alongside the police station.
The turnpike, being a limited access road, took a few minutes before the first officer arrived on the scene. By the time they got there the perp was nowhere to be found. They searched all night, dogs, choppers, and all, but except for one more sighting on a nearby off-ramp, the guy just disappeared.
The next afternoon, the neighbor at the end of my street was standing at her kitchen sink, washing dishes. She looked out the window and saw a man in a hospital gown, sleeping in the field behind her house. The field was about a quarter of a mile up the road from the turnpike ramp that he was last spotted on.
They finally caught the guy -- and this time they hog-tied him whenever they needed to transport him anywhere! Oh, and that window now has bars on it and is never opened.
I stayed up all night, listening to this story on the scanner, laughing my ass off! Those cops were beyond embarrassed. One of them is still on the force and gets furious if someone dares to mention that night. ;D