Elon Musk did not found Tesla, nor did he invent the car. Tesla was founded and built originally by Martin Eberhard and Marc Tarpenning.
Elon Musk isn't why SpaceX is successful, either. The real genius behind the rocket is Tom Mueller, who designed the rocket.
Elon Musk is not a genius. He has invented nothing. He just buys the companies and steals all the credit.