My guess is some kind of half-assed Chinese system or they would have had better stamina. It is a great example though of the changeover. I have been invested in oil industry, hydrogen and trash to fuel - I think all these apply to the future. We will always need oil, but we are moving away from the fossil fuel dependence (I say thankfully because I am a basic eco-weenie). I am happy to see the hydrogen over electric changeover. What is happening in the warehousing industry is a great test example for cars. Here in my town, we have a hydrogen bus - badass! I smile when I see this change. I have slowly extracted from oil industry as it began the recent downturn to focus on what I think is the next big evolution- alternative energy. I think also that America could become the changeover leader, like we were with computers, cars, and oil. I think PLUG is the one to lead the way with the most experience in implementing and making the changeover easy and smooth. I'm in it long-term. I am very confident and also excited for my grandbaby's future.