Here's an excerpt:
Jellinek was quite a character. He used to pepper DMGâ€™s engineers with colorful suggestions and criticism such as "Your manure wagon has just broken down on schedule" and "You are all donkeys". However, as he actually sold a lot of cars, he was tolerated and even listened to. Later, Jellinek would add Mercedes to his own and became Emil Jellinek-Mercedes.
Evolution of Car Logos