There have been two tracks for hydrogen. One, which I think has been a longer-term type of proposition, has been looking at hydrogen as a storage mechanism for energy. It's about being able to use renewables more efficiently, maybe generating electricity when you don't necessarily need it and being able to store that energy in that form. It's kind of large-scale storage.
That was one area of research, and the other one, of course, was looking at certain types of niche markets for transportation with respect to hydrogen.