http://www.fastcompany.com/magazine/120/motorhead-messiah.html?page=0%2C3

“Check it out. It’s actually a jet engine,” says Johnathan Goodwin, with a low whistle. “This thing is gonna be even cooler than I thought.” We’re hunched on the floor of Goodwin’s gleaming workshop in Wichita, Kansas, surrounded by the shards of a wooden packing crate. Inside the wreckage sits his latest toy–a 1985-issue turbine engine originally designed for the military. It can spin at a blistering 60,000 rpm and burn almost any fuel. And Goodwin has some startling plans for this esoteric piece of hardware: He’s going to use it to create the most fuel-efficient Hummer in history.

Goodwin, a 37-year-old who looks like Kevin Costner with better hair, is a professional car hacker. The spic-and-span shop is filled with eight monstrous trucks and cars–Hummers, Yukon XLs, Jeeps–in various states of undress. His four tattooed, twentysomething grease monkeys crawl all over them with wrenches and welding torches.

Goodwin leads me over to a red 2005 H3 Hummer that’s up on jacks, its mechanicals removed. He aims to use the turbine to turn the Hummer into a tricked-out electric hybrid. Like most hybrids, it’ll have two engines, including an electric motor. But in this case, the second will be the turbine, Goodwin’s secret ingredient. Whenever the truck’s juice runs low, the turbine will roar into action for a few seconds, powering a generator with such gusto that it’ll recharge a set of “supercapacitor” batteries in seconds. This means the H3’s electric motor will be able to perform awesome feats of acceleration and power over and over again, like a Prius on steroids. What’s more, the turbine will burn biodiesel, a renewable fuel with much lower emissions than normal diesel; a hydrogen-injection system will then cut those low emissions in half. And when it’s time to fill the tank, he’ll be able to just pull up to the back of a diner and dump in its excess french-fry grease–as he does with his many other Hummers. Oh, yeah, he adds, the horsepower will double–from 300 to 600.

“Conservatively,” Goodwin muses, scratching his chin, “it’ll get 60 miles to the gallon. With 2,000 foot-pounds of torque. You’ll be able to smoke the tires. And it’s going to be superefficient.”

He laughs. “Think about it: a 5,000-pound vehicle that gets 60 miles to the gallon and does zero to 60 in five seconds!”

This is the sort of work that’s making Goodwin famous in the world of underground car modders. He is a virtuoso of fuel economy. He takes the hugest American cars on the road and rejiggers them to get up to quadruple their normal mileage and burn low-emission renewable fuels grown on U.S. soil–all while doubling their horsepower. The result thrills eco-evangelists and red-meat Americans alike: a vehicle that’s simultaneously green and mean. And word’s getting out. In the corner of his office sits Arnold Schwarzenegger’s 1987 Jeep Wagoneer, which Goodwin is converting to biodiesel; soon, Neil Young will be shipping him a 1960 Lincoln Continental to transform into a biodiesel–electric hybrid.

His target for Young’s car? One hundred miles per gallon.

This is more than a mere American Chopper–style makeover. Goodwin’s experiments point to a radically cleaner and cheaper future for the American car. The numbers are simple: With a $5,000 bolt-on kit he co-engineered–the poor man’s version of a Goodwin conversion–he can immediately transform any diesel vehicle to burn 50% less fuel and produce 80% fewer emissions. On a full-size gas-guzzler, he figures the kit earns its money back in about a year–or, on a regular car, two–while hitting an emissions target from the outset that’s more stringent than any regulation we’re likely to see in our lifetime. “Johnathan’s in a league of his own,” says Martin Tobias, CEO of Imperium Renewables, the nation’s largest producer of biodiesel. “Nobody out there is doing experiments like he is.”

Nobody–particularly not Detroit. Indeed, Goodwin is doing precisely what the big American automakers have always insisted is impossible. They have long argued that fuel-efficient and alternative-fuel cars are a hard sell because they’re too cramped and meek for our market. They’ve lobbied aggressively against raising fuel-efficiency and emissions standards, insisting that either would doom the domestic industry. Yet the truth is that Detroit is now getting squeezed from all sides. This fall, labor unrest is brewing, and after decades of inertia on fuel-economy standards, Congress is jockeying to boost the target for cars to 35 mpg, a 10 mpg jump (which is either ridiculously large or ridiculously small, depending on whom you ask). More than a dozen states are enacting laws requiring steep reductions in greenhouse-gas emissions. Meanwhile, gas prices have hovered around $3 per gallon for more than a year. And European and Japanese carmakers are flooding the market with diesel and hybrid machines that get up to 40% better mileage than the best American cars; some, such as Mercedes’s new BlueTec diesel sedans, deliver that kind of efficiency and more horsepower.

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