Elon visits the border at Eagle Pass

SpaceX: Elon Musk's aerospace company, SpaceX, has a significant presence in Texas. SpaceX's Starbase facility, formerly known as Boca Chica, is located near Brownsville, Texas. This facility is used for the development and testing of SpaceX's Starship and Super Heavy rocket systems. It includes a launch site and a production facility for building prototypes of these spacecraft.

Tesla: Tesla, Elon Musk's electric vehicle (EV) company, announced plans to build a Gigafactory (known as Giga Texas or Gigafactory Austin) in Austin, Texas. The Gigafactory is intended to manufacture electric vehicles, batteries, and other components. It is expected to create thousands of jobs and play a significant role in Tesla's production capacity.

The Boring Company: Elon Musk's tunneling and infrastructure company, The Boring Company, proposed a tunnel project in the Austin area. This project, known as the "Loop," aims to develop an underground transportation system to alleviate traffic congestion in the region.

Neuralink: Neuralink, Musk's neurotechnology company, does not have a physical presence in Texas, but it is worth mentioning that Musk has expressed interest in establishing a Neuralink facility in Texas in the future. Neuralink is focused on developing brain-computer interface technology.

Other Ventures: Elon Musk has also expressed interest in other projects and ventures in Texas, such as the development of a new city called "Starbase" near SpaceX's facilities in Boca Chica, Texas, and the potential for a private spaceport in the state.

Please note that the information provided is based on my last knowledge update in September 2021, and there may have been developments or changes in Elon Musk's business activities in Texas since then. It's advisable to check the latest news and updates for the most current information on this topic.