Admit it, the carpet on the Aveo some cheap stuff. Not only it's cheap; it's hard to clean.
I am posting two pictures of a tool I got from Amazon that help to remove the stuff out of the carpet. It's a Venturi driven brush that attaches to the a vacuum cleaner hose.
It's small size works great for the car.
Here is the amazon link:
Amazon.com: Electrolux Home Care 62550D Power Paw Vacuum Tool: Home & Kitchen
People bitch about the sound it makes, personally like it having grown up on Air Force Bases.