The game company Cards Against Humanity has sued SpaceX for $15 million, arguing that billionaire Elon Musk's private space-exploration company illegally trespassed on private property in South Texas and damaged the land. The petition, filed last week in Cameron County state district court, alleges that SpaceX used land Cards Against Humanity owns three miles from the rocket company's launch site in Boca Chica as a construction-staging area without seeking permission.