A BMW Z4 was spotted in Beijing, China with a unique characteristic: It was made entirely out of stone! At first I thought the car was made to look like stone (sort of like a camouflage paint job) but no, it actually is stone. I wonder how long it took to make? The car is very detailed from the inside out and the windows are made out of real glass. Even though it can’t function like the car made of cigarette packs, this BMW is very cool and a work of art.