Elon Musk defies officials in California, and Uber makes an offer for GrubHub: CNBC After Hours

CNBC.com's MacKenzie Sigalos brings you the day's top business news headlines, and what to watch as the coronavirus pandemic continues to keep most of America on lockdown. Today, CNBC's Robert Frank takes a look at Tesla CEO Elon Musk and how following through on his threats to leave California for Nevada or Texas could lead to a lower tax bill.