Metal Cars Shred Under Strenuous Tires

I line up 3 metal modelcars in front of my big van - and Ill crush them to dust under the mighty tires! Each tire has over 700kg1500lbs of weight - enough to even crush these solid-made collectibles! As I drive over them they get flattened right away - but you can still recognize them as cars. But after running over them repeatedly and grinding the tires on them they turn into little crushed lumps more and more. In the end theres nothing recognizable left of them!