The stone BMW Z4 looks like something straight out of 'The Flintstones.' This car is made entirely out of stone, with the windows being the only exception. The safety ratings must be through the roof on this thing.
If you want to see the stone BMW Z4 in the wild, you'll have to head on over to Beijing. No word on whether this car was done by a sculptor or a stoned mad man, which adds a slight aura of mystery to the stone BMW Z4. If Fred Flintstone and the gang were alive and wealthy today, this would be their ride.