Report it immediately here:

https://www.smcsheriff.com/online-crime-reporting

Add license plate information. Here is a sample text you can write:
This car has been left here for over 72 hours. The side mirrors have been folded. There is even a sunlight shade that's been placed inside the car. We're closely monitoring this car and there has been absolutely no activity over the past 72 hours. Unclear where the owner has been or why they have abandoned the vehicle here. We would appreciate your action here to keep our street safe and away from potentially suspicious activities.