What are the names of Mercedes-Benz and BMW Audi?

BMW blue sky and white clouds, Audi four interlocking. According to the inquiry, I know the display of Che Huang.

1, because BMW's logo is composed of blue and white, which means that the engine propeller looks very comfortable, so it is called blue sky and white clouds.

2. Audi's logo is linked by four circles, representing four companies: Little Miracle DKW, Audi Audi, Horsey Horch and Wanderer Rover. These four companies, Qi Xin, worked together for common development and created the legend of Audi, so they are called interlocking.