Can your car speakers do this?

[peterchi]

Anyone who actually has speakers that are powerful enough to do this should also know that... they shouldn't do this.

i.e. use dynamat.

However, at least this is way better than the chocolate milk commercial (I think) where the kid put his milk and syrup mix on top of a home stereo speaker and blasted the music to shake the milk. Your link is at least somewhat humorous, and less absurd because there's no excuse for poor mounting of the drivers in a home stereo speaker. Whereas sometimes things are out of your control when setting things up in a car.