Britain's biggest car plant has so far weathered the coronavirus pandemic and a major corporate restructuring. But it may not survive Brexit. Nissan has warned that its massive plant in Sunderland won't be sustainable if the United Kingdom fails to strike a new deal with the European Union that maintains tariff-free trade in cars. "If we are not getting the current tariffs — it's not our intention but the business will not be sustainable," Nissan chief operating officer Ashwani Gupta told the BBC. "That's what everybody has to understand." source