To stop the flow of fuel, you would need to:
* Disconnect the negative battery cable: This will cut power to the entire car, including the fuel pump. This is the most reliable way to stop fuel flow in an emergency.
* Disable the fuel pump relay: This is a more technical solution requiring locating the relay in the underhood fuse box and removing it. You'll need to consult your owner's manual to identify the correct relay.
Important Note: Disconnecting the battery or the fuel pump relay should only be done in emergency situations to prevent fire or further damage. Attempting these actions without knowledge of your vehicle's systems could be dangerous.