World's most expensive model car made of gold on sale for $15m

WHAT do you buy for the billionaire motor enthusiast who already has a garage full of top sportscars?

There's always a Lamborghini carved out of solid gold - although unfortunately, they won't be able to drive it.German engineer Robert Wilhelm Gülpen has designed the most expensive model car in history, which is expected to sell for $15 million at auction.The precious motor, a replica of Lamborghini's Aventador LP 700-4, is carved from a 500g block of solid gold, with high-quality diamonds for the headlights and coloured gems for the lights at the rear.