What a sports car model can be worth, perhaps the highest you may guess is tens of thousands, but in this world there are always unexpected things, a German engineer named Robert Gulpen who specializes in making car models from precious materials spent 500 hours to make a 1:8 scale model of Lamborghini Aventador LP 700-4 and the materials alone cost $2.7 million: precious gemstones embedded, the body, doors and hood are carbon fiber with threads of solid gold and the rims and interior are gold and platinum, and so on. It obviously become the world’s most expensive model and will be auctioned at Sotheby’s, starting at 3.5 million euros, or about $4.8 million!