In the mid-1930s, engineer Gerhardt Macher from Berlin addressed a critical issue with DKW cars competing in international races. Despite their standard engines having a displacement of just 692 cc, these cars had to compete in the 1.5-litre class. To overcome this disadvantage, Macher designed a unique vehicle featuring dual engines, achieving a combined displacement of 1,384 cc. The chassis of Macher's car was based on the standard DKW ‘Master…