Comment Ridiculous (Score 1, Informative) 521
A semi-ridiculous idea.
It takes 200 million BTU equivalent of eletcricity to refine a ton of aluminum.
That's about the equivalent of 1,800 gallons of gasoline.
If using aluminum for the truck body ups the efficiency by 5 MPG, that would save 200 gallons for every 100,000 miles driven.
So you're still about 1,300 gallons in the hole.
A bad idea.