You have not addressed the main point - this has zero practical value. No this will not trickle down to Y or 3, how would it? What possible use would this have? It’s a silly expensive gimmick.
Also, I imagine the cold gas thrusters and control software are all from spacex, this is what starship uses to orient itself in the air.
> this has zero practical value. No this will not trickle down to Y or 3, how would it?
You’re that confident none of the materials or techniques aerospace engineers used to lighten this car are relevant to the rest of the lineup?
> I imagine the cold gas thrusters and control software are all from spacex, this is what starship uses to orient itself in the air
Not really, it uses grid fins and gimbals. The closest cold gas comes to air on Starship is in the upper atmosphere.