This is the world's most expensive model car, made from carbon fibre and covered in a thin layer of pure gold. The 1:8 scale replica Lamborghini Aventador LP 700-4, designed by German engineer Robert Gülpen, is available to buy for £200,000. But amazingly this model – currently on display at the Lamborghini showroom in Dubai – is just a prototype for a solid gold model, which will go up for auction in 2014 with a price tag of £4.6 million. The prototype car is made of carbon fibre and covered in a thin layer of pure gold. The rest of the bodywork contains 25 kilogrammes of precious metal and is carved out of a 500-kilogramme block of 22-carat gold. The full-sized car will have a V12 engine producing 700 bhp, the report said. The car will enter the Guinness Book of World Records under three categories, including the most expensive model car, the most secure showcase that features bulletproof windows and the most luxurious logo.

A replica model of a Lamborghini Aventador LP 700-4 in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4 as work is in progress, being worked on by a carbon fibre specialist, in Bavaria, Germany. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4 in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4, in front of the real deal in the Lamborghini showroom in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)

A replica model of a Lamborghini Aventador LP 700-4 made by German engineer Robert Gülpen, on display at the Lamborghini showroom, in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4 as work is in progress, being worked on by a carbon fibre specialist, in Bavaria, Germany. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4 as work is in progress, in the engineer's workshop in Bavaria, Germany. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen's replica model of a Lamborghini Aventador LP 700-4 in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)

Engineer Robert Gülpen holding his replica model of a Lamborghini Aventador LP 700-4, while sitting inside the real model in the Lamborghini showroom in Dubai, UAE. (Photo by Robert Gulpen/Barcroft Media)