Electric vehicle newbie Nikola soars while Tesla and Big Tech's sell-off worsens: CNBC After Hours

CNBC.com's MacKenzie Sigalos brings you the day's top business news headlines. On today's show, CNBC's Phil LeBeau breaks down the just-announced partnership between Nikola and General Motors. Plus, CNBC's Meg Tirrell explains why nine leading pharmaceutical CEOs made a pledge to prioritize safety during Covid-19 vaccine development.