Complex sentence: The Shadow car then continued down the main straight at speed, with Pryce's lifeless body still seated behind the wheel, until the car finally left the track at the first corner taking the Ligier of Jacques Laffite out of the race in the process.
Split into simpler sentences: The Shadow car then continued down the main straight at speed with Pryce still seated behind the wheel. The car finally left the track at the first corner taking the Ligier of Jacques Laffite out of the race in the process.