Being decent in traffic is hard because nobody can see your face. That’s the point.

Anonymity removes the usual reasons to behave, which is exactly why what happens there is informative. Nobody can identify you, nothing follows you home, and whatever you do is a straightforward readout of your default settings. That is uncomfortable and also useful. The absence of consequence is the test condition.

Let someone in this week when you did not have to. Notice the small pull to treat other drivers as obstacles rather than people. Practising there makes the visible situations easier.