Not necessarily memorability, but definitely a 1966 Hertz GT350H artifact. The attached images shows the speedometer cable locks to keep the GT350H renter mostly honest. The lock with large hole was on the back of the speedometer in the cluster, capturing the large nut inside, preventing the speedometer cable from being disengaged from the speedometer. The other was to prevent the removal of the small bolt holding the speedometer cable to the transmission. When the rental cars left Hertz, these were suppose to be removed, but not all were removed.
I have had these for years. Purchased off a popular auction site. IIRC, the seller tells me he and a buddy parted out a GT350H many years ago, rust bucket, and he kept these locks, stored away in the sock draw in his bed room. Years later he found, auction off and sold to me. They are the second set I have ever seen.
It will take some pretty rare piece(s) to make this trade.
Enjoy
Cory