It always astonishes me that not only did Heinlein invent the Segway ("The Road Must Roll"), he also invented the idea of people like Elon Musk (as D.D. Harrima

It always astonishes me that not only did Heinlein invent the Segway ("The Road Must Roll"), he also invented the idea of people like Elon Musk (as D.D. Harriman in "Requiem").