This is getting off my original topic......but......since it is I have a couple more questions (being the newby I am). When you open the driver's door on the MMH, you hear a brief noise. Sounds like a small pump or something like that. What is that? Secondly, the owner's manual states the car has two electric motors. One is for the EV mode which I understand. The manual says the other is to start the engine. How does this differ than the regular starter engine. I notice the starting of the engine sounds differently than a regular engine...no grinding sound.