This is what one calls "Mission creep". Get a tank. Then a HET to transport it. Then a M813 drop side to mount your two 600 Gal pods and pump unit. Got to have a TPU, or every gas station in a 100 mile radius would sooner or later ban you. Then you need a M88A1 to tow it if need be. Then a motor park for the tank and your "Fleet". You may need to sell a lot of apples to afford this.
I volunteer to haul tank team support supplies. On my way to Guam now to "liberate" this M1148 LHS for 20 ft. ISO Container, Flatracks, etc.. Started a YouTube channel about it and other Veterans Helping Veterans projects and episodes: