Well, this is something...

On the opening lap of Saturday's NASCAR Xfinity Series Pennzoil 150 at the Indianapolis Motor Speedway Road Course, Harrison Burton led a group of four or five cars that slammed into a random curb outside the racing groove in turn six.

The curb was massive, and sent each car flying into the air.

Burton, Brandon Jones, Kevin Harvick, Josh Bilicki and Alex Labbe were among the drivers involved in this weird incident.

Here is a zoomed in version of the incident: