"Disc manufacturers Maxell and Verbatim said they have found a way to successfully mass-produce HD-DVDs on standard DVD-recordable production lines, an important breakthrough that would help ease the transition to the next-generation format. Toshiba developed HD-DVD, which is one of two formats vying for supremacy in the race to bring high-definition video to DVD. The two companies will start producing HD-DVDs in bulk next year around the same time compatible drives begin to appear in personal computers, and the first HD-DVD recorders hit the market." Well there you go. They have talked about this as one of the selling points of HD-DVD. It appears that the prototype holds 15 GB of data, much smaller than Blu-Ray. But if you don't have to invest in new equipment to produce the discs, that goes a long way toward making up for the smaller storage size.