Stefan Wilson hopes that a good test at Indianapolis Motor Speedway is an indication of things to come later this month. The Englishman led the 18 drivers who participated in the one-day Open Test on the 2.5-mile oval with a lap of 190.571mph in his No. 5 Andretti Autosport car.

"We had a bit of help to get (the fastest) lap, but at the end of the day, everyone had a bit of help to get their fastest lap," Wilson said. "The car felt really good. We had a few laps in traffic at the end, and the car felt even better. We were working hard all day and tried to run by ourselves for most of the day. When I got the fastest lap, it was the only time I had an actual tow."

Team Moore Racing's Gustavo Yacaman was the only other veteran in the top five on the speed charts, posting the second-fastest lap (189.841mph). Yacaman's teammate Victor Garcia, Sam Schmidt Motorsports' Josef Newgarden and Bryan Herta Autosport's Duarte Ferreira rounded out the top five.

Yacaman was happy to run up front, but knows things can change very quickly at Indianapolis.

"We were on top (of the speed charts) for most of the day, but at the end of the day it doesn't matter," Yacaman said. "Last year, I was the fastest here, but at the race I was dead last because the car wasn't good on race day. Today was good. The car was good in traffic, but we'll see if we're still good come race day."

In all, drivers turned nearly 1,300 laps of incident-free testing. Rookie's Rusty Mitchell (Team E) and Jorge Goncalvez (Belardi Auto Racing) each turned 88 laps, most of any drivers.