Meanwhile, San Francisco can&#x27;t muster the courage to build a station on top of an existing tunnel boring site.<p><a href="http:&#x2F;&#x2F;www.socketsite.com&#x2F;archives&#x2F;2015&#x2F;12&#x2F;no-progress-for-a-subway-extension-to-north-beach-and-a-setback.html" rel="nofollow">http:&#x2F;&#x2F;www.socketsite.com&#x2F;archives&#x2F;2015&#x2F;12&#x2F;no-progress-for-a...</a>