This is the legendary Lamborghini Jota. Lamborghini's Chief Test Driver Bob Wallace wanted to build a pure racing machine based on the Miura that would conform to Appendix J of the FIA regulations.
At the time, Feruccio Lamborghini did not want any of his production cars go into racing, but he did allow Bob to use the new chassis (#5084 as sources say) and the new engine to build his "toy".
When it comes to looks, it does look like a regular Miura from afar, but it's really different. The body is very light, and a front chin spoiler is added to address the Miura's notorious front-end lift problem at high speed.
The rear has widened, and in fact, the rear tires are said to be the widest to be installed in a car in the 70s. Open air intakes are present, to channel out air as smoothly as possible.
The engine is still the same 4 liter unit found in the street Miura, but tuned to 440 HP. With a weight of only 880 kilograms, the power-to-weight ratio is around in the Bugatti Veyron territory!
Sadly though, Lamborghini was in financial peril, thus only one car was created. It was sold to a customer, but it was destroyed in an accident. The machine was completely burned.
However, the car's legendary status prompted customers to have their own "Jota". As such, Lamborghini built the P400 SV/J and the Jota SV/R in homage to the legendary race machine. These cars are also few in numbers.
But then, a dedicated Lamborghini owner from Britain decided to "bring back" the Jota to life. So he decided to buy a used Miura from the U.S.A. and then took him 15 years to rebuild the Jota with the exact specifications as the original one.
That car exists today. It's like a phoenix that got resurrected from flames.
And it made a brief appearance in the Countach Manga:
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http://i19.mangareader.net/countach/12/countach-3401343.jpg
