It's American English for the car being wheel clamped. https://en.wikipedia.org/wiki/Wheel_clamp A bit confusing for British English speakers, as to us a 'car boot' is what the Americans call the 'trunk'.

thank you everybody for the answer.

Just to clarify: The boot prevents the car from moving until the driver resolves the outstanding tickets or fees that were incurred previously. In the US, the other way is to impound, or tow the car to a locked parking lot. You don't get booted or towed for parking illegally--you get booted/towed for having a large unpaid fee, or several parking tickets or traffic citations.

It is clearly a North American video. I hadn't heard of that before, so appreciated Karl's comment. Here, the same device is called a 'clamp'. His car was 'clamped'.

here is an example... https://www.nbcdfw.com/traffic/stories/Dallas-Car-Boot-Gets-the-Boot-55241627.html