Complex sentence: A few years later the company was renamed to Maybach-Motorenbau GmbH ("Maybach Engine Construction Company") which originally developed and manufactured diesel and petrol engines for Zeppelins, and then rail cars.
Split into simpler sentences: A few years later the company was renamed to Maybach-Motorenbau GmbH ("Maybach Engine Construction Company"). The company originally developed and manufactured diesel and petrol engines for Zeppelins, and then rail cars.