Hitachi shows Fuel-Cell iVDR mini Gadget

“The Portable Video Player like device has a 3.5″ Screen and uses iVDR mini (iVDR stands for information Versatile Disk for Removable usage) drives as storage.” (i4u)

This shows that the fuel cell technology is moving along pretty nicely. The single biggest issue that mobile computing has to face is power consumption / battery life.