The governor of Maryland seems more excited about it than Elon Musk, but this is apparently the first 10 miles of a tunnel from Baltimore to Washington DC.<p>More details about the site in this article: <a href="http://www.govtech.com/fs/infrastructure/Maryland-Issues-Conditional-Permit-for-Hyperloop-Tunnel.html" rel="nofollow">http://www.govtech.com/fs/infrastructure/Maryland-Issues-Con...</a><p>"Hogan administration officials said Thursday the state has issued a conditional utility permit to let Musk’s tunneling firm, The Boring Co., dig a 10.3-mile tunnel beneath the state-owned portion of the Baltimore-Washington Parkway, between the Baltimore city line and Maryland 175 in Hanover."