Very well said.
Some goals are more strategic than realistic, and I think anyone can learn what strategic goals look like from Musks' ventures.
In my view strategic goals don't have the same form as SMART goals:
Traditional Smart - Specific, Measurable, Attainable, Relevant, Time-bound
Strategic Smart - Specific, Measurable, Advancing, Relevant, Terminable
The two differences, Advancing and Terminable, reflect the idea that strategic goals are geared towards innovation, not iteration. Advancing means that you don't actually know whether it is Attainable. Terminable means that the goal may be cancelled without major disruption to the business.