Complex sentence: Riccardo Patrese stalled his Arrows on the grid, so his mechanic Dave Luckett jumped onto the circuit to try and start Patrese's car; however, the organizers started the race and the whole field went into motion while Luckett was still on the road.
Split into simpler sentences: Riccardo Patrese stalled his Arrows on the grid, so his mechanic Dave Luckett jumped onto the circuit to try and start Patrese's car. However, the organizers started the race and the whole field went into motion while Luckett was still on the road.