ELKHART LAKE, Wis. (AP) — Will Power had the fastest practice time to open the first day of the Rev Group Grand Prix doubleheader Saturday at Road America as IndyCar welcomed fans to its races for the first time this season. Power, a Chevy driver and member of Team Penske, finished the more than 4-mile, 14-turn road course in 1 minute, 46.0021 seconds for a speed of 136.322 mph.