It's basically off road drag racing, but the same applies:
Huge v8, huge noise, huge tyres, huge wallet.
Don't know where they do it but probably all over north America. Theres a lot of it going on deep south, lots of straw hats and vests in bogging country. Also for lolz is the fact that they leavebthe arm out of the open window and get it 100% pasted in mud. Get on YouTube!
Ian, try this:
Find any picture on the web and open the image in its own window. Copy the address in the bar above.