More concentration of warehouses in the Joliet area. even though Joliet is only 35 miles form Chicago, you still have to order early for same-day delivery. That’s due to the congestion.
Interesting that the tipping point was really the State’s charging sales tax on internet purchases, not the reverse. That meant they could forgive withholding taxes for Amazon for a while.
Amazon’s Joliet warehouse: 1,000 jobs, up to 10 years of state tax breaks – Chicago Tribune.
Supply Chain and Logistics 