var addthis_pub="mastersairab Mercedes-Benz Concept BlueZERO E-CELL PLUS: Petrol-Electric Hybrid Hints at Production Model .fullpost{display:inline;} Mercedes-Benz will be presenting an updated version of its BlueZERO E-Cell concept car at this month's Frankfurt Motor Show. Originally presented in Detroit at the beginning of the year, BlueZERO E-Cell is