Circuit of the American
Possible the greatest go cart trick in the world. COTA has big boy Go Carts for rent that you get to run on the actual Formula 1 track. A new addition that has replaced the ride your bicycle around the track. You have to have a valid drivers license to drive the large go carts. Smaller carts available for kids under 16. Prices seem reasonable and they are open late during the week. If you $500 to drop they have a day of race school with actual race cars.
The indoor chain is a great place for the adults to get in some serious lap racing. We make a few trips a year.
Austin Parks and Pizza
The place for the little ones to go kart it up. They also have Laser Tag, Putt Putt, and few other things including an adult bar.