Complex sentence: In 1930 Mercedes Benz introduced the Nurburg 460, which was an armored car used to protect Pope Pius XI. As the armored car became more and more popular, vehicle manufacturers around the world started creating their own versions of the armored car.
Split into simpler sentences: In 1930 Mercedes Benz introduced the Nurburg 460, which was an armored car used to protect Pope Pius XI. The armored car was becoming more and more popular. Vehicle manufactures around the world started creating their own versions of the armored car.