2011 Crown Royal 400- Gordon Gets Wrecked

I HAD TO TAKE MY ANGER OUT SOMEHOW!!! Credit to Nascar.com.

How do I get sheetmetal from wrecked NASCAR cars ?

I see all the time people having/selling sheetmetal, used tired, etc from wrecked NASCAR vehicles. How are they getting such pieces ? I’ve been to several races and haven’t exactly seen a dumpster for this stuff.