It'd be nice if this actually ended up being Musk's greatest contribution to humanity, beyond kickstarting the popularity of electric vehicles, beyond making of

It'd be nice if this actually ended up being Musk's greatest contribution to humanity, beyond kickstarting the popularity of electric vehicles, beyond making off-Earth human settlement possible, if one (or more) of these actually proves an economically viable means of lowering atmospheric / oceanic CO2 ... it'd be a great outcome.