Article in Japanese, which Google does a good job translating into English:
http://www.yomiuri.co.jp/atcars/news/20150106-OYT8T50183.html Toyota has begun selling a hydrogen powered fuel-cell vehicle. They have 5320 patents relating to the fuel system. They want to put them in the public domain so that other manufacturers make fuel-cell vehicles, so that fueling stations will be built. They realize that with their own sales alone the necessary infrastructure will not be constructed. I think this is a dead-end technology. It cannot compete with plug-in electric hybrid cars and pure electric vehicles. - Jed

