Can I ask a question before we start?

When did they start racing trucks?  I wish that was a joke.  I had no idea that was happening.  I am not really a racing fan, but I have seen a few races and I like drinking beers so, it usually all works out.  But when did they start racing trucks?!

Source: YouTube video

Check out a wreck from this weekend's race, in the final lap at Talladega.