Kyle Busch had just posted the second-fastest lap in Group A in Saturday‘s NASCAR Cup Series practice at Iowa Speedway when calamity struck. On his 18th circuit of the session, Busch drove hard into Turn 1,

Just as Kyle Busch started to gain some momentum for a late NASCAR Cup Series playoff push, it swung in the other direction in practice on Saturday afternoon at Iowa Speedway.

Busch is back to "zero trust" in the car after a heavy impact in practice for the NASCAR Cup race this weekend