sentences:  In the final 15 laps, Castroneves maintained a gap over Dan Wheldon, Danica Patrick and Townsend Bell.Castroneves and Wheldon kept similar lap speeds of 218 mph through the last 15 laps, but with a gap of roughly eight car lengths and Patrick on his tail, Wheldon could not catch the pole-sitter.Castroneves won the event as his sister, Kati, and mother celebrated.