The 2006 Honda GRX Concept was a lightweight compact sports car displayed at the 2006 North American International Auto Show in Detroit. Developed by Honda R&D Americas (HRA) in California, the GRX combined ideas from Honda's motorcycle and automotive engineering programs. The GRX used an unusual 1.5-liter horizontally opposed six-cylinder engine originally developed for motorcycle applications. Honda installed the compact flat-six in an ultra-light sports car intended to com

The 2006 Honda Civic Type-R Concept was shown at the 2006 Geneva Motor Show as a preview of the next-generation Civic Type R. Based on Honda's three-door Civic hatchback, the concept was very close to the production model that would follow in 2007. Power came from a 2.0-liter four-cylinder i-VTEC engine producing around 200 horsepower. Honda stayed with the traditional Type R formula, using a high-revving, naturally aspirated engine rather than a turbocharger. The production

The 2006 Heuliez Macarena was a four-door convertible concept based on the Peugeot 407 sedan. It was designed and built by French coachbuilder Heuliez and shown at the 2006 Geneva Motor Show. The concept was created mainly to showcase a new retractable hardtop system while keeping four doors and four seats. The Macarena's main feature was its three-piece glass roof. At the push of a button, the roof folded into the rear of the car. The long side guides crossed over each other

The 2006 GM EcoJet is one of the most unusual concept cars General Motors has ever built. Developed with Jay Leno and unveiled at the 2006 SEMA Show in Las Vegas, the EcoJet combined the proportions of an exotic mid-engine supercar with technology more closely associated with aircraft. Instead of a conventional gasoline V8, the GM EcoJet used a Honeywell LT101 gas turbine engine. The turbine produced approximately 650 horsepower and 600 Nm (about 443 lb-ft) of torque, while t

The 2006 Ford Reflex Concept was built to prove that a small car did not have to look cheap, soft, or boring. Shown at the 2006 Detroit Auto Show, it was Ford’s answer to the idea that compact cars were becoming more important in America, but still needed attitude, technology, and a clear identity. The Reflex used a diesel-electric hybrid layout aimed at high fuel economy. Ford claimed up to 65 mpg, or roughly 3.6 L/100 km. The system combined a small diesel engine driving th

The 2006 Ford Mustang by ItalDesign was a one-off concept based on the fifth-generation Mustang GT. It was designed by Fabrizio Giugiaro after he saw the new Mustang and wanted to reinterpret it through an Italian coachbuilding lens. The project was approved by Ford, built by ItalDesign-Giugiaro in Turin, and revealed at the 2006 Los Angeles Auto Show. The concept did not try to erase the Mustang’s identity. It kept the long hood, rear-drive stance, fastback attitude, and agg

The 2006 Ford iosis X was a Ford of Europe concept shown at the 2006 Paris Motor Show. It took the “kinetic design” language from the earlier iosis sedan concept and applied it to a crossover body. Ford was clear that it was not a direct production prototype, but it was meant to prepare buyers for a future European niche model. That future model became easy to recognize later: the Ford Kuga. The iosis X had the same broad idea Ford would use in its early European crossovers:

The 2006 Ford F-250 Super Chief was a heavy-duty pickup concept inspired by America’s old Super Chief passenger trains. It debuted in 2006 as a huge luxury truck with locomotive-style surfacing, a massive grille, rear-hinged rear doors, and a cabin built more like a private railcar than a work truck. The powertrain was the headline. Ford fitted the concept with a supercharged 6.8-liter V10 using a Tri-Flex fuel system, meaning it could run on gasoline, E85 ethanol, or hydroge

The 2006 Ford 4-Trac was a rugged pickup concept unveiled at the Thailand International Motor Expo in Bangkok. It was not a Detroit show fantasy. Ford chose Thailand because the country was one of the world’s most important pickup markets outside the U.S. and a regional production hub for Ford one-ton trucks. The 4-Trac was a four-door crew-cab pickup with a rescue-truck theme. It had glossy red paint, rugged aluminum panels, a large vertical front end, Ford’s three-bar grill

The 2006 Fioravanti Skill was a two-seat concept based on the Fiat Grande Punto. It debuted at the 2006 Geneva Motor Show as a small coupe-convertible that could transform into a spider with a pickup-style rear cargo area. Its main trick was the roof. Fioravanti developed a patented retractable rigid-roof system that lets the Skill switch between closed coupe and open spider form. The rear section then worked more like a small utility bed than a normal trunk. That made the Sk

The 2006 Fiat Panda Jolly was a one-off concept created by Centro Stile Fiat and built by Stola. It was inspired by the old beach-car tradition, especially the 1950s Fiat 600 Multipla Jolly used around Capri. The concept stripped the Panda down into a small open leisure vehicle. It was not trying to be faster or more technical than the production Panda. The point was atmosphere: boat-style materials, open-air usability, and a relaxed resort-shuttle character. Fiat planned the

The 2006 Fiat FCC Adventure was a Brazilian-built concept created to celebrate Fiat’s 30 years in Brazil. FCC stood for Fiat Concept Coupé, and the car debuted at the 2006 São Paulo Motor Show as a two-door crossover based on the Fiat Stilo platform. It looked much tougher than the Stilo underneath. Fiat gave it a raised stance, large wheels, wide body surfacing, off-road-style tires, mudflaps, aluminum trim, and a deep orange finish. The result was closer to a Dakar-inspired