I’ve actually already looked into this. It’s very interesting and something I want to try, but that particular video is terrible. First off that truck fired right up, but it would have had to fill the air box with fumes, also he never showed you the fuel in the gas can, and when he covered 2 of the 3 intakes it died.
Even if that truck is running on vapors, he didn’t give me enough proof.
This video was the one that got me interested in this.
Video TLDR: It works, but doesn’t seem much better than running straight gas.
I was subscribed to this channel before he released this video, so personally I trust him.
Anyway I love this type of stuff, so thanks for posting it, and I’ll get back to you on your previous reply after work.