GM wins tax break from Detroit suburb for $1.3 billion plant expansion for EVs, batteries GM wins tax break from Detroit suburb for $1.3 billion plant expansion for EVs, batteries January 19, 2022 dzadmin Comments 0 Comment If GM decides to move forward with a new capital investment at the 39-year-old assembly plant, the automaker would get a 50 percent reduction in property taxes over 12 years on the new facility.