Not sure what you drive but is it possible to siphon the car into the tanks with this? That would stop you from having to lift altogether. Just be two trips to the station
I’m not a fan of gas cans in the trunk but we all gotta do what we gotta do
plan B
if you’ve got 4 cans then leave 2 and fill 2 and siphon them with this device when you return then take 1 out and next trip fill one and siphon it out. That’ll just leave ya one can empty 3 cans full and a full car
You can go to a wrecker and get a heavy diesel fuel pump on 12v and just connect to your battery and pump nearly quiet with little effort and be on security alert .
In shft you can pump 20 feet down (gas station fuel tank) when nothing else works