Eterniti Artemis shown in production spec: Shanghai motor show 2013

The final production specification Eterniti Artemis has been revealed at the Shanghai motor show, with the British company already reporting 15 sales.

The heavily modified Porsche Cayenne sells for around £250-400,000 depending on market and taxes, and has been built and developed in Eterniti's London headquarters.

Former Jaguar Le Mans chief engineer, Alastair Macqueen is behind the Artemis’ dynamics. His team have lowered the car and substantially widened the track to reduce the car’s centre of gravity. The Caynenne Turbo’s 4.8-litre V8 has been tuned to develop “more than 600bhp”

The bulk of sales do far have been in China, although Eterniti boss Tim Sugden told Autocar there have also been UK buyers: "The car suits flamboyant buyers who want a luxury car that offers exclusivity, " he said. "Typically that suits Chinese buyers, but we sold cars in the UK and Europe too."

Sugden said he expected to spend the next two to three years focusing on building Artemis sales, but added that more Eterniti models are likely. Eterniti bosses previously revealed future models could include at least two more SUVs and a bespoke supercar.

"The Artemis is our focus, but in two to three years time we would like to develop new models and build the brand," said Sugden. "There are cars in the pipeline that we'd like to develop."