Complex sentence: Matthew then got into a van and tried to run Carl down but at the last minute noticed that Anna was also in his path, swerved to avoid her, crashed into a wall and was catapulted through the windscreen.
Split into simpler sentences: Matthew then got into a van and tried to run Carl down. Matthew was barreling towards Carl, but at the last minute noticed that Anna was also in his path, swerved to avoid her, crashed into a wall and was catapulted through the windscreen.