German carmaker Mercedes and labour unions reached an agreement on Wednesday that will ensure a trio of factories in Germany will remain at full productivity for the coming decades, said works advisory council official Ergun Lümali. “We managed to make a breakthrough,” he said. The deal foresees the factories in Bremen, Rastatt and Sindelfingen focusing on electric cars. The agreement notes that Rastatt will also continue to focus on compact vehicles. Given Mercedes’ growing focus on luxury vehicles, there had been concerns these models would be discontinued. The three employ about 53,000 peop…