The point I'm trying to make is that there is a difference between your mission and the mission's unintended outcome.
As an engineer, I don't believe my mission is to put people out of jobs. In response to some of your points:
Yes, self-driving cars will put people out of jobs. But is that the mission of Google? No, their mission is to make people's lives easier / better.
Yes, electric cars will put gas-pump attendants out of jobs. Is that the mission of Tesla? No, their mission is to make people's lives better through sustainable transport and removing our dependence on fossil fuels.
I think it's important to focus on the value-add portion of what we do, and especially not treat the negative fallout (people losing their jobs) as some kind of marketing angle.