anyone been to a nascar race?

[muhnkee2]

Hey folks,
It might seem a bit of an amateur question, but i was thinking of taking my 3 year old son along to Nascar race. He has a fairly short attention span, so i was wondering if we go to watch Nascar, are there supporting races, as well as the main race? Is it a full day of track action, are there supporting classes, cars etc, or is it all about the qualifying and big race for the full Nascars?
Thanks a lot!
Greg
A Kiwi in Arizona.