The mind behind Tesla, Solarcity and spaceX...

This ted talk, is about Elon Musk, he is an entrepreneur, he have 3 very popular business, the first is Tesla, is the electric car brand, with it, he will pretends reduce the spend of fossil fuels, apart from this,  he did the first car for 100.000$, then now he shows the 50.000$ one, and in the future he want to buy the 30.000$ electric car that will did 400km.
The second enterprise is Solarcity, it works puting solar panels on the roofs, with the free instalations and every month the clients, pay a quote, that is less than the electricity bill. He things that in 20 years, most than the 50 percent of the energy resources will be solar.
the third company is SpaceX, the base of it, is about rockets, a rockets that will want to be recycable, and every time that a piece of it, will finishes his work, it will retourns to the earth, instead of will staying in the space. With this experiments Space X, saves the 75% of the normal costs

A fantastic presentation of Elon Musk, I have enjoied soo much.