It could have been the ultimate present for a motor enthusiast with a few millions to spare.
But luxury car maker Jaguar has insisted its unique XJ13 is priceless, despite receiving several offers as high as £7m.
The Coventry-based manufacturer keeps the car at its Jaguar Daimler Heritage Trust showroom.
The XJ13 was hailed as a potential Le Mans 24-hour race winner, with a top speed of 144mph, when it was completed in 1966. But the car was never raced because tests concluded that it was not fast enough to win at Le Mans without substantially more work.
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