There are white boxes mounted on poles all over the place. They aren't cameras. They were originally microwave traffic counters, but evolved to measure and collect all sorts of wireless data.

Each car that they spot, they can also grab passive WiFi data and Bluetooth. Probably others.

Your car probably has its own WiFi and Bluetooth, so unless its 20+ years old, you've been cataloged and tracked. Also, there are the devices you can see, but assume there are plenty you cannot.

Short of driving a very old car or maybe a motorcycle, you're being tracked. Even if you are driving something old, now you stick out as not being trackable. Unless there are a lot of other cars in this state, you'd be easy to find.

This whole situation is intolerable, but many people have no idea its even happening. Either that or they say something stupid like "I'm not doing anything interesting, why should I care?". Then a few months later, the systems get breached and scummy people can follow you, track your movement and do something to you or your loved ones. Maybe you should have cared.