All commercial vehicle relocators must be licensed and provide customers with a written disclosure that includes towing and/or storage fees prior to relocating his or her vehicle:

http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=095-0562&GA=095

A towing service is not liable for any loss or damage to real or personal property that occurs as a result of the removal or towing of the vehicle, per the order of any peace officer:

http://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=095-0407&GA=095