Elon Musk's Boring Company recently revealed a map outlining its proposed underground loop between Baltimore and Washington D.C.

The system, which would operate on two loops deep underground would deliver passengers to downtown stops in both cities in a 15-minute trip, The Baltimore Sun reported. When completed, this project will be the first step toward Musk's goal of connecting New York and Washington in a ride lasting less than 30 minutes. Passengers travelling via the loop will move at speeds between 125 to 150 mph, according to The Boring Company's website.

The Specs

The map shows that the two tunnels for the loop will run parallel to the Baltimore-Washington Parkway, from Baltimore's S. Paca Street to somewhere beneath New York Avenue in Washington D.C. The Boring Company said the 35-mile route will be constructed completely underground, except for:

• about 4 boring machine "launch pits" located on private property near the site, which should take about four weeks to build;
• about 20 (but no more than 70) ventilation shafts/emergency exits measuring 12 to 24 ft. in diameter, again located on private property nearby. These will be connected to the tunnel via another subsurface tunnel; and
• any other possible future stations.

The tunnel itself will be 30 ft. deep "in order to ensure that construction is imperceptible at the surface," The Boring Company said. The only way to know that construction is happening would be to see construction trucks going to and from the launch pits; otherwise activity would be undetectable and no underground vibrations would be felt.

When complete, the tunnel would be open for use to pedestrians, cyclists and cars, although pedestrians and cyclists would get priority, The Boring Company said. Fares are still undetermined, but according to the company, will be "comparable to or lower than current public transportation fees."

Construction on the tunnels is expected to take between 12 and 20 months.