2000s

Concept cars have always been a place for automakers to make outrageous promises. Wild horsepower figures, futuristic technology and projected top speeds look great on a spec sheet—but actually putting a prototype on a track and proving what it can do is another matter entirely. That distinction is important for this list. Take the 1995 Ford GT90. Its quad-turbo V12 and futuristic body came with a widely publicized claimed top speed of 253 mph, yet the prototype never underwe

There was a time when a concept truck did not need to look 90 percent ready for production. Automakers used pickups as rolling experiments, testing everything from Viper-powered roadsters and mid-engine car-truck hybrids to hydrogen-burning V10s, washable cargo areas, four-wheel steering, built-in generators, and cabins that doubled as mobile offices. Some of these trucks introduced genuinely useful ideas. Others existed mainly to stop people in their tracks at an auto show.

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

Most concept cars are designed to grab attention at an auto show before quietly disappearing into history. They showcase new technology, radical styling, or a brand's vision for the future, but few ever make it to production. Some, however, found a second life somewhere unexpected: video games. Whether officially licensed or serving as inspiration for unforgettable virtual machines, these concepts introduced millions of players to cars they may never have seen otherwise. From

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