Is this sunshade a safety hazard?

[TwoBees]

http://www.toysrus.com/product/index.jsp?productId=12410710&cp=2255957.2273443.2256187.3225213.3225216&green

http://trus.imageg.net/graphics/product_images/pTRU1-11837791reg.jpg

I bought one at target and those plastic corner pieces are LARGE! I'm assuming this isn't safe because the plastic pieces can become projectiles in an accident, correct?

[Joolsplus2]

But how hard and heavy are they? I wouldn't be too worried about it, given the speed and trajectory they'd need to take in order to hit anyone's head or body. Big old roller shades have a lot of mass to them, they really are a hazard.