"We're showing a lot more speed than last year" with the new aero kits, Simon Pagenaud, another driver of Penske's Chevrolet-backed cars, said Thursday. "It's taking a little bit of time to adjust, but so far it's a lot of fun."
The Long Beach Grand Prix caps a variety of racing on the street course Saturday and Sunday.
Other series practicing and racing include IndyCar's second-level Indy Lights series, sports cars in the Tudor United SportsCar Championship and Pirelli World Challenge series, so-called drifting cars and off-road trucks.
There's also the annual pro/celebrity race Saturday, in which drivers compete in identically prepared Toyota Scions.