??? I believe the spelling of the word used to indicate lousy drivers is Jehu (pronounced yayhoo around here), from one of the 5 Jehus in the Old Testament. Specifically, the one that drove his chariot so wildly that he rammed a tree and killed himself.

I googled Jehu, and got this (among many, many listings):

Jehu (jê´hy¡)
Ninth century B.C.
Israeli king who, according to the Old Testament, slew Ahab, Jezebel, and the prophets of Baal. He is proverbially known for his swift chariot driving.

Jehu (noun)

driver: charioteer, coachman, whip, Jehu

I've no idea where someone would associate this with a Tennessee citizen, unless they were misinformed...