IndyCar teams spent most of the morning running mock qualifying runs around the 2.5-mile speedway with Team Penske's Scott McLaughlin running the single fastest lap as the Kiwi reached 232.686mph.

A late flyer vaulted Chip Ganassi Racing's Scott Dixon to the top of the speed charts, leading the way at 225.182mph. The 2008 Indy 500 winner bested the two-time and defending Indy 500 winner Josef Newgarden,

Larson blamed himself for the miscue on a day two-time Indy 500 winner Takuma Sato also crashed early in the session and a potential multi-car crash was narrowly avoided Thursday afternoon.

A trio of former Indy 500 winners were among the fastest Wednesday, the first day of the open test. Here's what we learned from the more than six hours of testing.

Kyle Larson didn't have the intent of crashing during Indianapolis 500 testing, but hitting the wall Thursday did have a benefit in his view.