Drunk Driver drives into S.F. train tunnel

In this article, they state that a 40 year old man, named Scott Mitchell, was charged with suspicion of driving under the influence, driving on train tracks, and failure to obey a traffic sign. A witness stated that he had been following the train above ground until about 6am. He then passed it, entering the westbound tunnel in Duboce and Church streets. He had traveled about a half-mile, before hitting the concrete and end up getting stuck.