Vibration based hard-disk

It seems like time to kiss Good bye to the slow rotating SCSI disk drives...

This company does have some innovative ideas.. http://www.dataslide.com/techback.htm

I guess, the limitation on rotation speed of current hard-disks can be overcome by making the head rotate in opposite direction, thereby doubling the relative rotation speed. But I think this idea is too simple to be a new one.. Any comments?