Complex sentence: The truck, along with its two trailers, was dragged for around, and a car being transported on the train was also crushed by the derailed train, which was travelling from Port Elizabeth to Johannesburg.
Split into simpler sentences: The truck, along with its two trailers, was dragged for around. A car being transported on the train was also crushed by the derailed train, which was travelling from Port Elizabeth to Johannesburg.