The assembly plants that build some of Ford's best-selling and most profitable vehicles will become a beehive of electric vehicles and hybrid activity over the next four years. At the same time, new versions of the sporting Mustang are under pressure for the facility south of Detroit that builds Ford's pony car.

These are just three of the promises we found in the new four-year contract that Ford workers recently voted for. The analysis in this column is based on reports from my colleagues Phoebe Wall Howard, Jamie L. Lareau and Eric D. Lawrence on detailed investment plans in Ford's new contract with UAW.

Ford will build a new version of the F-150 Raptor on its Rouge assembly plant. (Photo: Ford)

The contract was supposed to be ratified on Friday and will expire in September 2023.

Among the headlines from the contract: