Sure it makes a map... It plots the cell tower and WIFI locations your phone has connected to around where you've been... What do you expect? It does not put a trail showing your pathway.
As for the Michigan Police? Don't give them permission to search you or your vehicle. They have to arrest you to search you or your vehicle without permission.
Michigan police. Well that’s not really an option right now :-( That’s why the ACLU is getting involved.