Here are six other projects he has yet to bring to fruition. The electric truck isn't the only thing the Tesla CEO promised that was late or undelivered. It's safe to say Elon Musk doesn't have the best track record when it comes to delivering on his promises - just this week, Tesla finally began production on the Cybertruck in its Gigafactory in Texas, four years after releasing its prototype and two years behind its planned production date. Account icon An icon in the shape of a person's head and shoulders.