call the police non-emergency number 946-6316 to report an abandoned, probably stolen vehicle. Make sure you have a description (make, model, color, number of doors, etc.), location, how long the car has been sitting there. You can check the VIN number yourself.
https://www.nicb.org/cps/rde/xchg/nicb/hs.xsl/vincheck.html
or http://preview.tinyurl.com/659pha
VIN number usually located on the driver's side dashboard (visible through the windshield).