Liam Nachawati started racing at 6 and now goes 90 mph on an international kart circuit. His family says a full season can cost $350K to $450K.

The IndyCar Series is racing for the third straight weekend, this time at new street course around AT&T Stadium: Qualifying, race start time, how to watch.

Transport, building, loading and unloading are among the tough tasks done by crew members involved in this weekend's races.