A year ago, Elon Musk, the billionaire CEO of Tesla, launched a big challenge to McDonald's. At the time, the influence of the whimsical and charismatic entrepreneur was on the rise. He had nearly 72 million followers on the social network Twitter. The challenge was to prompt the fast-food chain to accept the dogecoin cryptocurrency, of which Musk is an evangelist, as a means of payment in its restaurants. In return Musk offered the burger giant a huge advertisement: The Techno King, as he's known at Tesla, proposed to eat a McDonald's burger live on television. "I will eat a happy meal on tv if @McDonalds ... (full story)