Well everybody has an opinion and since people are sharing theirs I will share mine. But the fact is without being informed we will never know and even if we were informed we wouldn't know if it was the hundred percent truth. If you were to leave on good terms I would assume they would have been some formal announcement. So my guess is it was not on great terms. I just looked at the company he went to and they had 2 billion dollars in Revenue in 2016 with 6100 employees. He's likely getting more money with a company that doesn't have any concerns about commercialization. My guess is there were also concerns about how effective he was doing in his job at fuel cell. He may have seen the signs on the wall suggesting it was time to move on.
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