I never knew Hispano Suiza made buses, but there is a bus rental company in Spain that has restored one to join it's fleet of cool old buses for wedding rentals

https://plus.google.com/118385011224706019106

http://autocarescuina.com/v/Autocares-y-Autobuses/Autocares-Cui%C3%B1a/Alquiler-de-Autobuses-Santiago-Pontevedra-Vigo/Alquiler-Autocares-Autobuses-Pontevedra/Veh%C3%ADculos-Hist%C3%B3ricos/70.aspx

http://www.elportaldelautobus.es/fotos/details.php?image_id=104147