John Weston’s 1992 Geo Storm doesn’t look like much on the outside. But there are some people that say it’s what’s under a car’s hood that matters. “Since I changed the fuel system unit, it’s drastically different. I disconnected the fuel line from the injector so no liquid goes to the engine,” said Weston. Weston showed NBC2 a version of his air vapor flow system where instead of liquid fuel, only vapors go to the engine. “They used to say, ‘Hey I’m running on empty. I’m running on fumes.’ Well, this is actually running on fumes,” he said. Weston says the system burns cleaner and also made a bold claim about fuel efficiency from a one-time test. “It came up to 463 miles a gallon if we had driven in the same manner – a gallon,” said Weston. “I drove from here to Fort Myers, and I’m up there keeping up with traffic running 80 mph.” Now, the backyard mechanic is looking for investors so he can eventually take his invention public. In the meantime, he says you might see his car on the highway. Source