Whoa, don't get suckered by the hype. 63 cents? not likely! Time IS money. People seem to forget that. It takes what, about 5 minutes filling up at the pump. Bet it takes lots more time making a tank of home-brew. Time spent tinkering with the setup, replacing filters, cleaning up, etc. Time sourcing supplies and gathering them up. Time spent transferring the stuff to storage and then transferring it into the truck. All that time adds up and is worth money.
Plus every single thing that has to be paid for, from the equipment to containers to consumables to electricity to waste disposal costs, all count towards the price per gallon. Fuel and wear and tear on your truck while running around collecting supplies counts as well.
Any mods you have to do to your truck adds to the overall cost.
I'm not trying to discourage you, it still may work and may even be cheaper than at the pump, but don't kid yourself, its not going to cost even close to . 63 per gallon.