Billionaire investor Bill Ackman on Saturday proposed merging SpaceX with Pershing Square SPARC Holdings, a special purpose acquisition rights vehicle created by his firm, Pershing Square Capital Management, that would give Tesla Inc. (NASDAQ:TSLA) shareholders priority access to invest in SpaceX.In a post on X, Ackman said the structure would distribute special purpose acquisition rights, or SPARs, to Tesla shareholders, allowing them to invest directly in SpaceX or receive cash for their rights. "This wou ...