Video of an early prototype by Altec Lansing of a speaker system mounted on a longboard. No need to Carry that boom box anymore and bring the music wherever you go. If you can’t wait to see it skip the video to 2:30min.

Quote from Christopher King:
An Altec Lansing product manager is now in the process of developing the actual product. And believe me when I say that when this product makes it out, skateboarders everywhere will watch, then immediately go in search of our ‘sonic longboard.’
More info here