You could use the siphoned gas to fuel a generator or to refuel your vehicle during evacuation. However, it is really difficult to siphon gas from modern cars because they have anti-siphon valves and devices in them.Sep 3, 2021
How do you siphon gas from a car without using your mouth?
https://www.youtube.com/watch?v=BdXBrv2dOy8
Can you siphon fuel from modern cars?
You siphon gas out of a new car the same way you do out of an old car. You just need to get the hose to snake all the way into the tank. Getting it back out can be a challenge as you need to release the spring loaded door inside the fill neck.