The Edison Company pumped out invention after invention, ruthlessly taken to market under the brand.
If even 1/4th of what this guy dreams of accomplishing happens, Elon Musk will go down in the annuls of history with his name next to other great dreamers, inventors, and do-ers.
When everyone is driving electric cars and space travel is considered routine, even if it is just to cut the commute across oceans, people will look back on this guy's ramblings and read about how he exemplified the best parts of the American experience.
Immigrant, works hard, gets rewarded, doesn't just rest on his laurels, he risks his fortune time and time again trying to compete with entrenched decades-old industries, and despite all the nay-sayers, he proved them wrong and actually produced products that not only made it to market, but are considered the top of their class, which kick-started the competition to follow in his footsteps and get their asses in gear for the future.