The company that’s doing the work for audi is Joule Unlimited. They’re an MIT company with a research facility in New Mexico. The company has won a bunch of awards.
They have bioengineered bacteria to excrete diesal fuel—so there’s no refining involved. The bacteria excrete the diesal and it goes straight to the fuel tank. That’s why the cost is so cheap. Here’s more reasearch on them.
https://www.google.com/#q=joule+unlimited
Does anybody know what to look for if you are interested in investing in this product? TY