HDD usually stands for Hard Disk Drive. I highly doubt that Sony will shoot themselves in the foot AGAIN knowing that they are depending on BluRay. Than again, their executives are retards.
thats kinda like a TiVo and a DVD Recorder in one. theHDD stands for Hard Disc Drive not High Definintion umm, actualy i dont see how you thought HDD DVD ment HD-DVD. no offence prinny