The police must be short on their quota. I went through three roadblocks today driving around Sant Cugat. I got away this time. I guess I look respectable, my skin is fairly white and my car doesn't have any racing stripes on it.
Not exactly sure what they are looking for. Probably just an excuse for a fine. A while back they searched my car for a non-existent radar detector. I always make sure to pretend my Spanish is really bad and that I've only been here for a couple weeks "Err... Estoy Americano y no hablo bueno espanyol" usually works. I can't be bothered to do the Spanish driving test, which you need to do if you've been here more than 6 month.