This article has this wrong. The DoubleTree Hotel's garage is 2 block in the other direction at 7th & King St. Not that it matters, but I'm just saying...
I take that back. I just read this article where he was seen closer to the train station looking for his car. Apparently, the guy was suffering from some sort of dementia.
http://philadelphia.cbslocal.com/2011/01/04/video-released-in-murder-mystery-of-del-war-vet/