Money When old Detroit-Hamtramck plant reopens as Factory ZERO, it’ll be unlike any other in US December 7, 2020 Jamie L. LaReau, Detroit Free Press Comments Off on When old Detroit-Hamtramck plant reopens as Factory ZERO, it’ll be unlike any other in US Factory ZERO is full of firsts. The 35-year-old plant that straddles Detroit and Hamtramck will have technology that trumps other U.S. auto plants.