Vin Diesel has lined up a project at MGM called The Machine, says a story at The Hollywood Reporter.
The film, from Night at the Museum writers Robert Ben Garant and Thomas Lennon, is officially described by MGM as follows:
[Diesel will play] a human-like machine created in secrecy by the Pentagon as the world's first true ultimate weapon. Twenty years after the project was buried and decommissioned for reasons unknown, The Machine is discovered by a kid who befriends him. When the government learns it has been reactivated, the Machine must protect the family harboring him.
In addition to starring, Diesel is set to the produce the project, as he has with several prior films, including Fast and Furious and Fast Five. He previously teamed with Garant and Lennon (as an actor only) for the 2005 comedy The Pacifier.