In this articleTSLAElon Musk, Founder and Chief Engineer of SpaceX, speaks during the Satellite 2020 Conference in Washington, DC, United States on March 9, 2020.Yasin Ozturk | Anadolu Agency | Getty ImagesWILMINGTON, DEL. — Tesla CEO Elon Musk defended his role in the company's $2.6 billion acquisition of SolarCity in court Monday, arguing he didn't