The self-driving car is coming. And right now, our best supply of organs come from car accidents... Once we have self-driving cars, we can actually reduce the number of accidents, but the next problem then would be organ replacement.
We're on the brink of the next industrial revolution. Instead of buying things, you can make them on a printer. When you have a 3D printer, you can iterate more - what used to take months, now takes hours.
For me, when you put a MakerBot in a school, you add a manufacturing education to the environment where I think we can really empower the next generation to compete in the global economy.