Mars 2020 Rover Livestream

JPL (Jet Propulsion Laboratory) has a livestream of the Mars 2020 rover build.

"Watch live as NASA’s next rover, Mars 2020, is built and tested in the Spacecraft Assembly Facility at the agency’s Jet Propulsion Laboratory in Pasadena, California. Live moderated chats will take place on this channel Monday through Thursday at 11 a.m. and 4 p.m. PT. "