Subtitle: Do you need a cardio-thoracic surgeon or will you be performing your own heart surgery today?
Really. That's about the size of it. DUI in Illinois has so many potentially far-ranging consequences that it makes the question seem almost silly. In fact, if for some strange reason you appear at your first court appearance without an Illinois DUI lawyer, the very first thing you'll likely hear from the Judge is "where is your attorney?"
That isn't the Judge being smart-alecky (though some members of the bench are pretty adept at that). If you tell a Judge you don't have an attorney for a DUI, watch their face as they attempt to stop themselves from rolling their eyes. Most of the time they'll be successful just because they're too busy, but sometimes you might catch them in the act.
DUI isn't a traffic case. It isn't a criminal case. It isn't a seminar on forensic science. It isn't civil litigation. No, in Illinois, it's all those things and more. There are aspects of every one of those fields involved, and punishments range from the civil, such as driver's license suspension or revocation, to the criminal, including jail or prison time, significant fines, community service, and alcohol or substance treatment. DUI can affect your future employment prospects, social standing, and where applicable, immigration status.
In short, you need a lawyer. A lawyer that focusses on defense of DUI.