Summary: Crain’s Avery Donmoyer talks with host Amy Guth about NASCAR weekend, rain delays, crowd control and where the city might have felt the biggest impacts from the event. Plus: Downtown's office vacancy surge hits new record high, Chicago Fed chair says it's on path to curb inflation without triggering recession, Metra and the state plan to reboot Chicago-Rockford rail service and the birthplace of Black History Month gets National Park Service grant for rehab.
