If Musks BFRs script seems oddly familiar, thats because it is. Previously, SpaceX said it would change the heavy-lift rocket game with its Falcon Heavy a rocket that launched for the first time in February but this Disney-esque storyline may not pan out as imagined. Not only did the Falcon Heavys core rocket booster crash into the ocean on its inaugural launch, but its for-show Tesla Roadster payload also overshot Mars orbit and could collide with something in space years down the road.
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The author is an ignorant asshole with Musk Derangement Syndrome.
The second stage purposely depleted its propellant to see how far out it could go. It was more successful than planned.