Many years back, Popular Mechanics (or one of those similar magazines) had an article about a 100mpg carbeurator. My grandfather had a shop, so he built one. I

Many years back, Popular Mechanics (or one of those similar magazines) had an article about a 100mpg carbeurator. My grandfather had a shop, so he built one. It worked, but if he tried to "gun it" or was travelling too fast (which incidentally wasn't very fast at all) it would stall, and take some effort to restart. I don't remember much about it since I was a kid at the time, but was basically a box that collected gas fumes, instead of using the venturi effect with air and "wet" gasoline alone.