Elon Musk says The Boring Company is working on a “simple, precursor Hyperloop” tunnel between Austin and San Antonio, where vehicles would travel at more than 200 mph. Writing on X on Sunday, Musk said traffic congestion can stretch the trip between the two Texas cities to as long as 2.5 hours today, and claimed the tunnel would cut that to a consistent trip of under 30 minutes.
The Boring Company shared Musk’s post on its own X account, saying it “would be excited and honored to build this massive infrastructure project.” Musk did not disclose the proposed route, construction cost, financing structure, or an expected completion date. He also did not say whether the system would use conventional electric vehicles, specialized passenger pods, or the low-pressure tubes envisioned in his original 2013 Hyperloop concept.
If it gets built, the tunnel would be a major step up from what the company operates today. The only fully operational Boring Company system is the Vegas Loop, which carries passengers in Tesla vehicles through tunnels beneath the Las Vegas Convention Center at far lower speeds. The company has been expanding its ambitions, with the Dubai Loop set to become its first international project and a $3 billion funding round led by the United Arab Emirates valuing the company at $23 billion earlier this month.
The announcement also lands in a city where the company already has a foothold. The Boring Company recently highlighted a tunnel project for Morgan’s Wonderland in San Antonio while announcing three new loop winners in New Orleans, Baltimore, and Dallas. It is also building the Music City Loop in Nashville, a privately funded tunnel connecting downtown to the airport.
The Austin-San Antonio corridor along I-35 is one of the fastest-growing regions in Texas, and the highway connecting them is notorious for congestion, which makes the pitch an easy sell for commuters. Still, the project is at the idea stage, and a tunnel of this length and speed would need extensive regulatory approvals, land access agreements, and safety testing before any digging starts. It also would not be the first big Boring Company plan to stall, as proposed systems in Chicago, Los Angeles, and between New York and Washington never materialized. For now, there is no timeline, and Musk has not said when more details will follow.
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