Elon Musk's Boring Company has proposed an underground tunnel from Nashville's airport to downtown. Readers offer their takes.

Somehow, Elon Musk keeps convincing cities to allow him to dig under them. The latest locale to give The Boring Company the rights to displace dirt directly under their feet is Nashville, Tennessee, which announced an agreement this week to allow Musk’s firm to build a 10-mile “loop” that will connect the city’s airport and convention center—an arrangement that has modestly improved traffic flow in Las Vegas while turning the city into a laughingstock of the infrastructure design community.