If you record the license plates or images of the drivers, 100%. If you record something like make and model, and you catch a car that’s rare enough in the are

If you record the license plates or images of the drivers, 100%. If you record something like make and model, and you catch a car that’s rare enough in the area that there is only one person it could be, then also yes. It’s absolutely wild to me that someone’s own observations of a public place can be legally restricted, but that’s GDPR.