Brandon Wirtz made a comment about exploding hydrogen tanks for fuel cell use in in cars in his blog at http://www.xyhd.tv/2007/12/rants-and-tangents/stop-drilling-for-oil-in-the-us-or-prepare-for-a-methanol-economy/ However the research shown at http://www.engadget.com/2006/08/23/south-koreans-make-hydrogen-solid-for-a-brighter-fuel-cell-futur/ indicates to me that by the time we get any kind of real alternative fuel infrastructure in place I won’t be any more worried about a hydrogen tank than I currently am about sitting on 30 gallons of gas.