Complex sentence: All of these cars were purchased by Twin Cities Rapid Transit in 1946, and were sold to Newark in 1953, and ran on the Newark City Subway until upgrading the system to LRVs in 2001.
Split into simpler sentences: All of these cars were purchased by Twin Cities Rapid Transit in 1946. They were sold to Newark in 1953 and ran on the Newark City Subway until replacement by LRVs in 2001.