Nope, the roads can&#x27;t handle it.<p>There is a chicken-and-egg problem getting actually-useful subway service (under 10 minutes apart, 24x7 including holidays) in a place that is currently low-density. Without the density of Manhatten&#x2F;Tokyo&#x2F;London you can&#x27;t afford good service. Without good service, anything above suburban density is misery.<p>BTW, SF does not have good service. It&#x27;s much worse than Boston even.