Marc Jacobs Hobo Hillier drives a panel van

Meadows recommends that mechanics install the system, but some vehicle owners have installed it themselves. She provides buyers with detailed instructions on how to install, and she will stand by on the phone

Marc Jacobs Hobo Hillier

to advise mechanics.
Hercules retails for $3,500, but Meadows is offering it at a discount for $2,500.
The system works with gasoline, diesel, propane and biodiesel.
The system can be traded among vehicles, such as moving it from an RV to a car driven locally.
Long-haul truckers can expect a 30 percent increase in mileage, she said. Cars and pickups have seen increases of 30 to 50 percent, and RVs, 50 percent, Meadows said.
Meadows installed the system on her car, a 1977 Cadillac Eldorado.
"That car went from 8 miles per gallon to 32," she said.
Others have also reported good results, she said. That includes H2 Pure Power engineer, Gary Miller, who has it on his pickup; an independent trucker; the owner of a 2007 Cadillac Escalade in Casa Grande; a Phoenix locksmith who drives a panel van; a Yuma motorist who drives a panel van; and the Golden, Colo., owner of a pickup truck that pulls a large trailer.
Meadows is an environmental-medicine physician. In Corpus Christi, Texas, she tested toxicity levels in workers at industrial businesses and farms and treated them for related ailments.