Regeneron Pharmaceuticals' Covid-19 treatment, Miami Mayor Suarez Woos Elon Musk on High-Tech Tunnel, Congressman Don Beyer of Virginia on negotiating President Biden's infrastructure spending plan, Nobel Laureate Michael Spence on the economy, and Bloomberg Radio's Greg Jarrett on how Covid is changing the legal world.Hosts Denise Pellegrini and Ed Baxter feature the best stories of the day from Bloomberg Radio, Bloomberg Television, and over 150 Bloomberg News bureaus around the world on Bloomberg Radio's Bloomberg Best.