GM EcoJet: Jay Leno’s Turbine-Powered Supercar

Turbine Thrill - The world of automotive innovation is filled with bold experiments, and some of the most exciting vehicles ever built come from passionate individuals with a deep love for engineering and performance. One such creation is the GM EcoJet, a concept supercar that emerged not from a traditional manufacturer alone, but from the dream of one of the world’s most famous car collectors—Jay Leno. This biodiesel-powered marvel, introduced in 2006, is a testament to creativity, collaboration, and cutting-edge technology.

Jay’s sleek EcoJet turbine supercar draws inspiration from the 2002 Cadillac Cien show car and GM’s 1950s Firebird jet cars by Harley Earl. (Picture from: http://www.agentauto.com/)

Jay Leno, widely known for his career as a talk show host, is equally famous for his extensive car collection. His garage, dubbed the "Big Dog Garage," houses an extraordinary assortment of vehicles, from classic antiques to high-performance modern supercars. But being a collector wasn’t enough for Leno—he wanted a car that reflected his vision, his passion for technology, and his commitment to sustainability. That vision took shape through a partnership with General Motors, specifically with Ed Welburn, GM’s Vice President of Global Design. Together, they crafted the GM EcoJet, a supercar that blended jet-powered engineering with the strength and durability of a Cadillac.

Front view of Jay Leno's Turbine-Powered EcoJet Concept. (Picture from: Motortrend)

The idea was born from a discussion between Leno, Steve Anderson, and Frank Saucedo from GM’s Advanced Design Studios. Once Ed Welburn refined and approved the sketches, the real work began. GM designers collaborated closely with Leno’s Big Dog team, working tirelessly over two weeks to bring the concept to life. The result was a car that drew inspiration from fighter jets and Formula 1 race cars, with design elements reminiscent of the Cadillac CIEN concept. While the aesthetics were crafted by GM, the mechanical engineering was entrusted to Bernard Juchli, the lead mechanic of Leno’s collection.

Electronics International developed the aircraft-inspired glass cockpit display, while Microsoft and Azentek integrated navigation and audio systems that allow Jay to access the internet and manage emails from the front seat—when parked, of course. (Picture from: PopularMechanics)

At the heart of the EcoJet is a highly sophisticated Honeywell LT-101 turbine engine, the same type used in Bell 222 helicopters and U.S. Coast Guard Dolphin helicopters. This unique powerplant produces an astonishing 650 horsepower and 583 lb-ft of torque, channeling its power through a four-speed automatic transaxle sourced from a C5 Corvette. Theoretically, the car could reach a blistering 394 km/h (245 mph), making it a true high-performance machine.

One of the most intriguing aspects of the EcoJet is its dual-fuel system. It features two separate fuel tanks—one for biodiesel and another for JP-4 jet fuel. The JP-4 is used exclusively for starting the turbine engine, after which the system transitions to biodiesel. However, the engine is not limited to biodiesel; it can operate on nearly any combustible liquid, demonstrating remarkable flexibility and efficiency.

Rear right side view of Jay Leno's Turbine-Powered EcoJet Concept. (Picture from: Motortrend)

Beyond its powertrain, the EcoJet showcases an advanced construction approach. The body is made from carbon fiber reinforced with Kevlar, while the engine is mounted within a modified Corvette Z06 hydroformed aluminum frame. Structural components are crafted from lightweight aluminum and magnesium, ensuring a balance of strength and agility. Many parts were sourced from GM’s performance lineup, including Brembo carbon-fiber brakes from the Corvette ZR1 and suspension arms from the Corvette Z06 C6.

True to its environmentally friendly ethos, the EcoJet’s interior avoids animal-sourced materials, opting instead for sustainable alternatives like Alcantara, a synthetic suede-like fabric that can be recycled. Inside, the car is controlled by an advanced onboard computer system developed by Microsoft and Azentek. This system not only manages the intricate turbine engine but also integrates entertainment, digital gauges, and even voice-activated controls.

The GM EcoJet is a unique fusion of extreme performance, futuristic design, and sustainable technology. Though it never entered production, it showcases how innovation flourishes when passion meets expertise. For Jay Leno and his team, the EcoJet wasn’t just a showpiece—it was a glimpse into the future of high-performance, eco-conscious driving. However, it's not the only biodiesel-powered supercar; another notable example is the UK’s Trident Iceni. *** [EKA [15122013] | FROM VARIOUS SOURCES | POPULAR MACHANICS | AUTOBLOG | MOTORTREND ]

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