So as I didn’t get profanity thrown at me for posting this as a bargain, I thought I’d put it straight to the forums.
Link(renfe.com)
Short and medium-distance routes will be able to travel free of charge from September to December on the trains of the state railway company Renfe and the associated local transport associations.
As spotted on Mydealz(mydealz.de)
Ozbargain buddy, not SpainBargain