That's depressing information

WorldCat has a little doohickey that tells you how far away a given book is from your current location.  For example, the mysterious Montmorency: A Roman Catholic Tale (1848), by the equally mysterious A.M., currently resides at Cambridge University (needless to say, this is the only copy known to humankind).    Cambridge, WorldCat helpfully informs me, is 3400 miles away from Rochester NY.  Clearly, I should just grab a few things, jump on a plane, and...