Southeast Michigan Council of Governments (SEMCOG)This file locates the major facilities for the "Detroit Three" automakers in Southeast Michigan as of 2015.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/9d5639298d4940869b6a811f0b2616ef_5engSEMCOG Open DataPublicAutomotive Facilities [Michigan]Web servicesMichiganLast Modified: 2025-11-01