Elon Musk’s The Boring Company has been out of the news lately but recently confirmed it has completed digging a second tunnel underneath the Las Vegas Convention Center as part of the ‘Loop’ system it is constructing.

The first of the two tunnels was finished up in February and The Verge reports that workers will now start constructing the above-ground passenger stations on either end of the tunnels alongside a third underground station in the middle of the system.

The Boring Company is hoping to open the Convention Center Loop to shuttle visitors from one side of the venue to the other in time for the Consumer Electronics Show in January 2021.

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The Loop will have the capacity to move more than 4,000 people per hour through the tunnels in a handful of Tesla vehicles. The chief executive and president of the Las Vegas Convention and Visitors Authority (LVCVA), Steve Hill, recently said the Loop will include Model 3s, Model Xs, and a unique ‘tram’ built on the Model 3 platform that can fit between 12 and 16 passengers. The Loop will turn what is ordinarily a 15-minute walk from across the campus down to a ride of less than two minutes.

The vehicles rolling through the tunnel will be operated by human drivers but later be capable of following sensors laid out in the tunnels.

“Whenever we get to the point where we know that [it’s safe to let the vehicles drive themselves],” Hill added, “that’s when we’ll take that step. But there is not a deadline for making that happen.”

The Convention Center Loop will be offered as a free service and the LVCVA has already spent $52.5 million on the project.