[vankleekkw]

Being a previous mechanic, you don't have to worry about some of the previous items. The engine will not overheat and you don't need to change the fluids. The idle enviornment is actually less damaging then stop and go traffic. Don't worry about the battery overcharging as there is sensors that turn the alternator on and off to prevent that from happening.

The item that you do have to worry about is the fuel pump. If the car finally turned off due to running out of fuel, you are going to have that fuel pump go out shortly. The reason is that modern fuel pumps have no source of lubrication other than the fuel that is going through it. When you run out of gas, the pump is essentially running dry and causes pre-mature failure.