what if you lose? yeah, ok, so losing is a real possibility. but the moment we announced that we were already running at a gallop, stephen — i challenged my team of about 200 really bright women and men to take that drive train out of a haul truck and replace it with a hydrogen fuel cell. i gave them three months to do it. they did it, and they did it with days to spare. not many. but at the same time, steve... well, hang on. i mean, i read the reports of this high—profile moment where you invited the press to see this amazing monster truck that was now running on hydrogen. as i understand it, it could only run for 20 minutes on hydrogen. yeah, it's called proof of concept. i mean, did you think about the first flight? it's not like these. i mean, that's proof of concept — it worked. it's no use to you. 20 minutes of truck operation is of no use to you. it might take you many, many more years. judging about the future of the battery in electric cars... the fuel tank, stephen, was about this size, not that much bigger. so now we're putting in a really big fuel tank. we think it can run about 2k