If you are referring to the hill just south of the 865 exit and the curve to go southbound that is a prime spot. Perfect to sit and catch some of those maniacs as they top the hill.
I am no wallflower when I run the interstates but 85 on 465 seems to be a bit of a push
I was coming off 865 and merged onto 465 east. The "hill" was maybe a mile further east before 421.