Complex sentence: Ryder shows up in a 1979 Trans Am and helps Jim and Grace escape the police in order to save the two for himself, managing to single-handedly take out all of the cruisers and the helicopter.
Split into simpler sentences: Ryder shows up in a 1979 Trans Am and helps Jim and Grace escape the police in order to save the two for himself. He manages to single-handedly take out all of the cruisers and the helicopter.