Just two years ago, Mary Barra, chief executive of General Motors, declared: “We believe in an all-electric future.” She went on to claim that the challenges her company was facing in the EV market were merely temporary bumps on the road to net zero. But as Bob Dylan famously observed, things have changed. On Jan. 8, GM announced it would take a $7.1 billion hit in charges against its earnings, of which $6 billion is due to Barra’s failed EV strategy . In a filing with the SEC, the company also