Circuit Design Help

[Ronald_raygun]

NOTE: No, this isn't for the first competition. It's for an exhibition which I hope to present at the National Science Bowl this year.

Anyway, I think all of our computers today have this special feature: Push the button to turn on the computer permanently.

A momentary switch (the button) somehow rearranges the circuit on the motherboard to turn on and keep on the computer. How does this work and can I incorporate it onto my circuit?

This circuit will be part of a fuel-cell powered car where the car will be mounted in its charging base at one end, and I will be at the other end, at least 10 meters away with the starting button/device. All I need to do is to push the momentary switch which will start the car and release it from the charging base.

The car is now under its own power from the fuel cell and speeding along the track to me.

Prior to starting, the car is plugged into a series of ac adapter-like plugs, which--when the car starts--are disconnected from the car as the car moves away from its base.

Any thoughts?