 Complete the following phrase:  Before the 2006 season, Penske changed engine manufacturers from the under-powered Toyota to the more powerful Honda in its Dallara IR-05 car after Toyota withdrew from IndyCar. Castroneves started fifth and led 40 laps for his first series road course win in the Grand Prix of St. Petersburg. He took a second successive victory at Motegi, leading 184 laps from pole position to lead Wheldon by 42 championship points entering the 