Chicago wouldn't have been my first choice for an event like this, but there will be places to pass if your car is fast enough. I get that this isn't the most imaginative layout, but the narrowest street on the course is 4 lanes wide with several 6 lane wide roads. The best passing zones will include Lake Shore Dr between turns 2 and 4 is (four lanes wide) and coming out of turn 5 you head down S. Columbus Dr. which is 7 lanes wide. Even after putting up jersey barriers you still only lose one lane per section.
I would have also preferred heading up to Montreal to run on the Circque Gilles Villeneuve, but Covid/vaccine issues would prevent that from happening. Too many unvaccinated drivers and team members for that to happen until sanity prevails.
My dream road race would be to send these guys out to Laguna Seca where men are men and the boys end up wrecking at the corkscrew.