Nikola said Wednesday it had filed for Chapter 11 bankruptcy protection and would pursue a sale of all or most of its assets, after grappling with rapid cash burn and struggling to raise funds in the past few quarters. The development brings to a close a challenging journey that included numerous leadership changes, choppy sales and a plummeting share value. EV firms that went public during the pandemic, promising to revolutionize the sector, such as Fisker, Proterra and Lordstown Motors have fi...