In 2021, TBC completed the Las Vegas Convention Center (LVCC) Loop, a three-station transportation system with 1.7 miles (2.7 km) of tunnels.

[7] Musk cited difficulty with Los Angeles traffic, and what he sees as limitations of its two-dimensional transportation network, as his early inspiration for the project.

The company began designing its own tunnel boring machines, and completed several tests in Hawthorne, California.

Innovations include:[citation needed] Replace tunnel entry and exit excavations by having the TBM "porpoise" in and out of the ground.

[26] TBC built a 1.14-mile (1.83 km) high-speed tunnel in 2017 on a route in Hawthorne, California, at the SpaceX headquarters and manufacturing facility.

[30] In May 2019, the company won a $48.7 million project to shuttle visitors in a loop underneath the LVCC.

[47] In October 2021, Clark County Commissioners approved a 50-year franchise agreement for a 52-stop, mostly-underground system, a "16-mile (26 km) dual loop system...operating mainly in the Resort Corridor with stations at various resorts and connections to Allegiant Stadium, Brightline West Las Vegas Station, and the University of Nevada, Las Vegas.

[49] In May 2023, TBC was given permission to build the Vegas Loop underground transportation system to 69 stations for a tunnel network of 65 miles (105 km).

[50][51][52] It would include the existing LVCC Loop and extensions to casinos along the Strip, Harry Reid International Airport, Allegiant Stadium, downtown Las Vegas, and eventually to Los Angeles.

[53] Due to operational expenses, it is probable that the Boring Company is subsidizing the Loop to keep customer prices low.

A day pass from Resorts World costs $5, while the LVCVA is paying the Boring Company an additional $4.5 million annually, which equates to $7.50 per ride.

[55] In March 2024, the Las Vegas Convention and Visitors Authority board of directors voted to extend the existing tunnel, and vowed to address concerns that arose over the OSHA violations.

In February 2021, Miami mayor Francis Suarez revealed that Musk had proposed to dig a two-mile tunnel under the Miami River for $30 million, within a six-month timescale, compared with $1 billion over four years estimated by the local transit authority.

[60] As of November 2023, the city is waiting for the Miami Dade Transportation Planning Organization to complete an analysis of the project.

[61] In July 2021, Fort Lauderdale, Florida, accepted a proposal from the Boring Company for a tunnel between downtown and the beach, to be dubbed the "Las Olas Loop.

"[62] In August 2021, the city was beginning final negotiations with TBC,[63] and Mayor Dean Trantalis estimated the total cost of the 5-mile (8.0 km) round-trip tunnel would be between $90 and $100 million, including stations.

[88] After customs officials said that they would not allow imports of any items called "flamethrowers", Musk announced that he would rename them to "Not-A-Flamethrower" since the devices were in fact akin to roofing torches.

Musk announced separate sales of a fire extinguisher, which he described as "overpriced... but this one comes with a cool sticker.

A technical design review left 12 teams that were invited to Las Vegas to demonstrate their engineering solution in a September 2021 competition.

[92] Musk's planned tunnels were criticized for lacking such safety features as emergency exit corridors, ventilation systems, or fire suppression.

[98] Public transit consultant Jarrett Walker called TBC "wildly hyped", and criticized how the company "dazzled city governments and investors with visions of an efficient subway where you never have to get out of your car, [but turned] out to be a paved road tunnel.