Complex sentence: He provokes Sheriff Childress into giving him a speeding ticket on purpose, establishes his credentials with the sheriff as a hot rodder and potential speed maniac, with an explicit reference to the 3-window's tested speed.
Split into simpler sentences: He provokes Sheriff Childress into giving him a speeding ticket, establishes his credentials with the sheriff as a hot rodder and potential speed maniac. With an explicit reference to the 3-window's tested speed.