put another way....
i just wrote and i don't think they snuck any light AAMC content into CAR's. and i can't remember exactly but i don't think any passages were overly scientific or medical...... i wondered about the same thing as you beforehand.......... it might have helped to have some real world knowledge (like economics) for a few questions. i don't necessarily mean economic knowledge, more familiarity.
P/S had some horrible experimental passages............... like i had to read parts of the question more than 10x and start diagramming stuff.
hope i'm remembering this correctly... and i also hope this is consistent with being able to speak about exam experience (esp. when they don't give that much guidance in some areas)