Sorta off topic, but since we are going to Portugal in October, and renting a car, anything anyone care to share about the border crossing into Spain? I'm guessing it's no deal at all, since it's EU country into EU country, but that's just a guess.
Correct. We did it in the other direction (Spain->Portugal) last September. It's kinda like crossing a state border in the US. You'll see a sign that you're in the new country, but that's it.
-Bob