Yamaha OX99-11
Year: 1992
Debut at: Unknown
Production cost: $800,000*
The Yamaha OX99-11 was a joint venture by International Automotive Design and Yamaha. The OX99-11 contained a 3.5-liter V-12 engine, a fiberglass chassis, and an aluminum body.
On the outside, it had an overt, space-age feel with its bubble windshield and smooth edges. But with budget disagreements and a recession in Japan, it was one stroke of bad luck after another for this concept, which is why it was never made.
Audi Avus
Year: 1991
Debut at Tokyo Motor Show
Production cost: $2.4 Million*
The Audi Avus debuted in 1991 at the Tokyo Motor show in all of its chrome glory. Built-in Stuttgart, Germany, the Avus was only a hypothetical model. It had an aluminum body and a fake W12 mid-engine that would have had 502 horsepower.
However, based on these specifications, it truly would have been a speed demon, going from 0 to 60 in 2.9 seconds and reaching a jaw-dropping 211 miles per hour!
Mercedes Benz C-112
Year: 1991
Debut at: Unknown
Production cost: $395,000*
The body of the Mercedes Benz C-112 was designed by Carrozzeria Coggiolo and had a Mercedes-made chassis. The C-112 was rumored to be a complementary model to the C11 race car that could be marketed to the public. And what would an everyday consumer get when they drove a C-112 home? It came with a 6 liter, V-12 engine, and a spacious, leather interior.
The public was ready for the concept and Mercedes received hundreds of orders but, in the end, executives decided the model was a superfluous design.
Buick Avista
Year: 2006
Debut at: North American International Auto Show
Production cost: $84,035*
The Buick Avista was a breath of fresh air from the brand known for its girth and durability that dominated its style. With the Camaro’s Alpha platform as its foundation, the Avista was conceptualized by Ed Welburn and featured twin-turbo V-6 engines. And though it was very stylish, the Avista was more than just looks.
The concept had Magnetic Ride Control which allowed for smooth steering on the road and with 400 horsepower, it was quite the novelty for this car manufacturer. However, Buick insisted on retaining the Avista solely for design research.
Chrysler ME Four-Twelve
Year: 2004
Debut at: North American International Auto Show
Production cost: Unknown
The Chrysler ME Four-Twelve, whose design had a strong McLaren essence, was a fully-functioning concept car from the well-known brand. The ME Four-Twelve was named for its four turbochargers and twelve-cylinder engine. It had a seven-speed transmission and could hit 248 miles per hour.
The leather interior was partnered with a chrome-covered console and gunmetal gauges and also allowed for keyless access. But unfortunately, there was too much money needed to develop the concept further, and so the Chrysler ME Four-Twelve was not to be seen.