Best Martinsville in-car audio: 'Why is the (expletive) earth round?'

Published Apr. 1, 2015 10:30 a.m. ET

foxsports

Crew chief Chad Knaus had a track-bar question for Jimmie Johnson. Johnson had an answer for Knaus ... one that ancient Greek philosopher Pythagoras could appreciate. Plus, it was a bad day for power steering.

Enjoy the best scanner sound from Martinsville on another edition of NASCAR Race Hub's "Radioactive."