Mattress on the Freeway!

O my gosh!!!! Scariest thing happened today! Was driving on 280 towards S.F. and all of a sudden cars started slowing down. I was behind a huge truck and was going the normal speed but we were sudden slowing down. With my small car, I came up pretty close to the truck. For a quick second the truck started to swerve left and then it hit me! I saw 2 huge mattresses laying in the fastest and 2 lanes over. I slowed down just enough to rollover and knick the corner of the mattress on the right and went through the tiny gap in between the two. If I were going any faster I swear my car coulda flipped over! SCARY!