I've got 5 gallons in a jerry can here, to do just that! My tank pick up will suck the tank dry, not even a cup of gas remains! I guess the tank is dented in all the right places. I had to suck the tank dry, as my tank drain has been soldered shut.
Looking at the bottom of my panel, seeing the dents in the gas tank, the four holes repaired in the oil pan, I've come to a conclusion. It must have been featured on an episode of the Dukes of Hazzard. Perhaps Bo and Luke drove it up the old creek bed in order to escape Roscoe P. Coletrane.