Original sentence: He raced for Mercedes-Benz during their original dominating Silver Arrows period, named after the silver colour of the cars.He was affectionately dubbed Caratsch by the German public, and was also known by the title of Regenmeister, or "Rainmaster", for his prowess in wet conditions
Edited sentence: He raced for Mercedes-Benz during their original dominating Silver Arrows period, named after the silver colour of the cars, and also drove speed records for the firm.He was affectionately dubbed Caratsch by the German public, and was known by the title of Regenmeister, or "Rainmaster", for his prowess in wet conditions