Building an entire car by yourself, after you've taken care of full time work, family etc always require topping up with food and beverages that contains quick energy. You start with chocolate, then you go for candy since it contains more sugar. Then go switch over to eating 100% clean sugar with a spoon, then coffee, Espresso, double espresso, tripple espresso. Red bull... Redbull with a tripple espresso etc.
Right now I'm evaluating heavier stuff:
https://static1.pt-content.com/image..._DSC9784-1.jpg