Complex sentence: The person behind both the company and the car was Helmut Schlosser, an Austrian who had emigrated to the United States and who in the late 1950s was managing a small machine shop in North Bergen, New Jersey.
Split into simpler sentences: The person behind both the company and the car was Helmut Schlosser, an Austrian who had emigrated to the United States. In the late 1950s Schlosser was managing a small machine shop in North Bergen, New Jersey.