Those cars were rebuilt from old Class 8000 cars in 1988/1989, to offer quality sleeping-car accommodation on "Estrella" services.
Unlike TWLd-x23 Talgo cars, these cars do not have private toilets, and only offer a shower in addition to the traditional washbasin.
August 2002. Photo by Alberto López Torrea (alt418357@hotmail.com) (Acknowledgements), from Tranvia.org Posting and Comment by P.L.Guillemin (plguillemin@yahoo.fr)