Helio Castroneves thinks he might be hitting his prime - now that he's celebrated his 39th birthday. Castroneves capped a dominant weekend for Penske Racing in Detroit with a cruise down a bumpy street on Belle Isle, where he won the first of his 29 open-wheel races in 2000. About an hour after his second win of the year, a 1.6836-second victory over Penske Racing teammate Will Power at the Detroit Grand Prix, Castroneves already was thinking about racing at Texas Motor Speedway next weekend. The three-time Indianapolis 500 winner was 0.060 seconds behind Ryan Hunter-Reay at the Indianapolis 500 and likes his chances with an improved car on ovals. More...