Has Another Historical Meaning
There is one important reason the object might catch people’s attention.
The coat hanger has historically been used as a symbol associated with abortion and reproductive-rights activism, particularly as a reference to unsafe abortions performed before legal and safe abortion access was available. (The Indian Express)
However, that does not mean every clothes hanger seen on a car is an abortion-related political statement.
In this particular situation, there is no obvious additional text, political sign, or other context in the photograph connecting the hanger to that