Germany has submitted a proposal on regulating carbon dioxide limits for cars that campaigners say is a “desperate attempt” to weaken EU emissions limits. The proposal calls on EU member states to allow carmakers to “bank” credits earned by producing electric cars, in order to make heavier, more polluting vehicles. The European Commission has proposed limiting average fleet emissions to 95 grams of CO2 per kilometer (g/km) from 2020, down from the 130 g/km limit set for 2015. But in what many saw as a capitulation to the German car industry, it decided to reinstate a “supercredits” scheme in which...