said 14 Jun 2018
The company plans to transport passengers between O'Hare and Block 37 in the Loop in approximately 12 minutes each way.
— City of Chicago, primary source
City of Chicago press release naming The Boring Company for the Express Loop. The release carries no build timeline; the "18 to 24 months" previously recorded here could not be sourced.
What happened: Never built. No tunnel was dug, and the project lapsed when Mayor Emanuel left office in May 2019.
due 14 Jun 2020 · resolved 20 May 2019
City of Chicago press release, Jun 14 2018 · archived