Sigurd - Really good point. 600 miles is a LONG way. Which is why in an earlier thread I proposed we NOT expand the CWBP into new regions. There is SO MUCH to map right now, that we don't need to open up new areas.
I've also found (since living in the UK) that distances are relative. 100 miles is not considered very far in the States, but it is considered quite a long way in the UK. I think it's easy for Americans to think in terms of vast distances when, in reality, vast distance or large area is not needed.