Toyota reported its net profit fell by 77% in its fourth quarter due to the earthquake in Japan and the strong value of the yen. The first hydrogen fueling station in the U.S. fed directly from an existing hydrogen pipeline opened yesterday. Google is lobbying the state of Arizona for it to become the first place in the world to allow autonomous cars to drive legally on streets. All that and more, plus a look at the EPA's hydraulic hybrid technology which could help cut the cost of making hybrid vehicles.