Elon Musk's companies are intertwined. There's renewed speculation that his sprawling, intermingled business empire could see a Tesla mega merger.

On its first day public, SpaceX floated folding in Tesla and a former director called it likely. Here is why the SpaceX-Tesla merger talk is serious.

SpaceX president Gwynne Shotwell said the two companies are working towards the same goal, and didn't rule out a merger with Tesla in the future.

Elon Musk's companies are intertwined. There's renewed speculation that his sprawling, intermingled business empire could see a Tesla mega merger.

A combined SpaceX-Tesla could be worth more than $3 trillion.

A combined SpaceX-Tesla could be worth more than $3 trillion.

A SpaceX-Tesla merger seems inevitable.

SpaceX president Gwynne Shotwell has sparked speculation about a potential merger with Tesla, as the historic SpaceX IPO continues to dominate global financial headlines.