Illinois is wierd sometimes. I haven’t been pulled over since I’ve lived here (knock on wood… do it!), but I’ve heard from people who have, that the police will confiscate your driver’s license when you get a ticket.
That never made sense to me.
Apparently Illinois is the only state in the nation that does this. The above-linked article discusses the practice, and points out that in modern life, things like getting on an airplane or buying Nyquil are impossible without a drivers license.
Of course, Illinois does allow residents to get State-issued ID cards in addition to their license… I’d say it seems like a good idea to get one until this crazy law gets changed.