One of the most iconic brands in financial television returns for today's issues and today's world. This week's Wall Street Week features David Westin's interviews with Former Treasury Secretary Lawrence H. Summers, RockCreek CEO Afsaneh Beschloss, Willett Advisors CEO Steve Rattner, Robin Hood Foundation CEO Wes Moore and GM Chairman & CEO Mary Barra. The conversations highlight the volatility in bitcoin on its path to mainstream acceptance, regulation of brokerages and Reddit, and traditional automakers' efforts to embrace an electric future.