I just bought a second hand 2004 Smart for two. I had only driven a fully manual car before so I am new to semi automatic transmission. I am using the fully automatic option at the moment and I am confused by the function of the neutral mode. While I am driving in town, am I supposed to put it in neutral when the car is stationary, or should I leave it at A all the time and use the neutral mode only when the car is parked? There is also something that is bothering me: when switching from neutral to auto by pushing the lever left, sometimes it switches to the semi automatic transmission and it goes to 1, even though I hadn't pressed the button that is supposed to make the switch. Is my car defective?