Elon Musk Proposal for Alamo Loop Tunnel Advances

Elon Musk, co-founder and chief executive officer of Tesla Inc., speaks during an unveiling event for the Boring Company Hawthorne test tunnel in Hawthorne, south of Los Angeles, California on December 18, 2018.

Photo: Getty Images

A proposed underground tunnel connecting San Antonio's airport and downtown has won initial approval from the local regional mobility authority. The board for the agency assigned to improving transportation in Bexar County -- the Alamo Regional Mobility Authority -- chose the plan for a feasibility study. Th plan is from Elon Musk's Boring Company and would use Tesla's electric cars to carry passengers between the airport and downtown. The estimated price tag is between 247-million and 289-million dollars.