I've come across a couple of sites that might be useful for stop overs in Spain & Italy. Neither are in English but they do have the GPS co ords so it might not be too difficult to work out the locations. 
Spain:- http://www.lapaca.org/areas/espana.php
Italy:- http://www.turismoitinerante.com/sostare.shtml
Don

Spain:- http://www.lapaca.org/areas/espana.php
Italy:- http://www.turismoitinerante.com/sostare.shtml
Don