[CamperBob2]

Interesting, thanks. My understanding was wrong -- I thought the automakers were using actual metal mesh screens to block the passage of siphons. Apparently (according to the GasTapper video I just watched on YouTube) you can just ram the smaller hose right through the obstruction.

[rapind]

And thank you. I wasn't even aware gas tanks had security measures, let alone gadgets to circumvent it until your comment piqued my interest. Pretty interesting.