This was actually intended to be the new NSX all the way back in the late 2000s. But then the recession hit and Honda saw the demand for a new supercar go away. The road car project was immediately cancelled, but it lived on as a JGTC race car.
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2
Lamborghini Cala
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Before the Gallardo, Lamborghini thought of building a smaller car with a V10. That car was the Cala, but it was killed even after some journalists drove it.
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3
Mercedes-Benz C111
Media Platforms Design Team
A series of experimental rotary-powered supercars from Mercedes, they ran and drove, but they never went on sale.
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4
TVR Cerbera Speed 12
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Envisioned as a road car and GT1 racer, the Speed 12 had a 7.7 liter V12 and was the scariest car to drive in Gran Turismo 2. It was cancelled due to changing GT1 regulations and the fact that it was just too damn hard to drive on the street.
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5
Volkswagen W12
Media Platforms Design Team
It looked production ready, it was tested at Nardo where it set records, and it looked like people would be buying it. But VW never put it into production. Instead, it, along with other concepts from Bentley and Audi, serves as inspiration for the Bugatti Veyron.
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6
Lotus Esprit
Media Platforms Design Team
As part of 2010s concept onslaught, Lotus showed a new Esprit supercar that would debut two years later. As all the other concepts were cancelled, the Esprit stood alone as the one that would be built. But after years of delays, it was finally canceled.
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7
Jaguar C-X75
Media Platforms Design Team
What started as a turbine hybrid ended up being a heavily boosted four cylinder hybrid. A handful were built, but Jag ultimately decided against series production when they realized the market for their million dollar car just wasn't there.
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8
Cadillac Cien
Media Platforms Design Team
While it wasn't necessarily intended to be built, all the ingredients were there. The concept was a running, driving prototype with a 7.0 liter V12 sitting behind the driver.
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9
Chrysler ME 4-12
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A mid engine, quad turbo, V12 powered 850 horsepower supercar from Chrysler. Sounds too good to be true, but this one seems to have come close. Chrysler built running prototypes that they were track testing, and the upper crust within Chrysler wanted to make it happen.
Unfortunately, it didn't work out.
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10
Lamborghini Asterion LPI910-4
Media Platforms Design Team
Lamborghini's first hybrid, this would have been built if the Urus SUV didn't get the green light. Also, our interview with CEO Stefan Winkelmann seems to show a boss that wasn't interested in building a hybrid. At all.