Looking at a vehicle with a no crank condition recently, I was interested to see that the root cause was a seized a/c compressor which had also jammed the clutch closed. As a result the starter was not able to crank the engine, hence the no crank condition. The solution is fix the a/c compressor, but the diagnosis to get there was not direct! This led me to wonder what happens with the XLR if the starter can't crank the motor, does it keep trying and burn out or does the software detect lack of engine rotation and stop the starter? The quick fix BTW was take the drive belt off. Not an option for any distance but it would allow moving out of the way.