Shell reinvents small electric car with efficient concept   •   Horsepower called flawed car performance measure   •   Cars Sold Under Different Names Abroad   •   Inside firm improving engines to accelerate net zero   •   Renault 4 review and verdict   •   Shell reinvents small electric car with efficient concept   •   Horsepower called flawed car performance measure   •   Cars Sold Under Different Names Abroad   •   Inside firm improving engines to accelerate net zero   •   Renault 4 review and verdict   •