ILL. State Law
"It is unlawful to carry or possess any firearm in any vehicle or concealed on or about the person, except on one's land or or fixed place of business.
It is unlawful to carry or possess any firearm on any public street or other public lands within the corporate limits of a city, village, or incorporated town, except when: an invitee thereon or therein, for the purpose of the display of firearms or the lawful commerce in firearms.
Exceptions are persons using their firearms on established target ranges; licensed hunters, trappers, or fishermen while engaged in their licensed activity; transportation of firearms that are broken down in a non-functioning state or are not immediately accessible, and transportation, carrying, or possession of a firearm which is unloaded and enclosed in a case, firearm carrying box, shipping box, or other container, by the possessor of a valid FOID.
Under the Wildlife Code, it is unlawful to have or carry any firearm in or on any vehicle or conveyance unless unloaded and enclosed in a case."
Note: In Chicago it is unlawful to keep any firearm unless it has been registered with the Chicago Police. . I get nervous just driving through that town. Pizza isn't to bad though.
Wayne in FW