OP, if you're a warmshowers member, you could try contacting members in the Pittsburgh area and ask if you could park at their home. I once received a request like that and a group of 4 cyclists left their van at my place while they toured in my area. They weren't seeking a place to sleep, just a place to park. I never met them because they arrived when I was at work, and returned to their van when I was at work.