I will be in Spain and Portugal in a month, and will be renting a car for a few days (separate cars...from Madrid to El Escorial and Segovia with one car, returning it to Madrid, and a few days through Andalucia later). I don't have any plans to drive in Portugal.
My question is are there any unusual logistical issues with driving? I'm especially wondering in light of the recent thread on tolls in Austria. Paying tolls at tollbooths is no problem, assuming they take cash or US credit cards. Is there anything else special that needs to be done? I speak very basic Spanish (I can read road signs, ask for directions in a simple manner, and if stopped by police I could make essentials known, but couldn't read legal disclaimer fine-print or get into technical specifics)