 Complete the following phrase:  It was the final season running the IR05 Dallara spec cars, which had been the series sole chassis supplier since 2007. It was also the final season running the Honda Indy V8 naturally-aspirated engines, which had been the series sole engine supplier since 2006. The events took place in twelve states of the United States, as well Canada, Brazil, and Japan. The schedule featured ten streetroad courses and eight on oval tracks. The premier event was the 