This is not really surprising due to the business model Hertz was going after. They expect their used vehicles to have better resale values than what they currently have... which is a bunch of Tesla's bought at more or less the peak of pricing and now to be sold when prices have come down to sanity. They rode the market and lost.

Also they got a LOT of EV's, I give them props for doing so... but rental cars should be a little more diverse of fleets. I realize it's easier to maintain a few types of vehicles, but that's not the business they are in. Additionally, Tesla is not yet the type of company that can readily support fleet purchasers. It'll be a while before they are, so until then you're looking at a lot of pain.

Its really no different than buying Apple for business use in 2010 (give or take). Lots of companies were starting to do it, but at that time there were only 4 Apple stores in the US that even had a "business team". Apple was not setup to handle it and still, to this day, are very very slow to roll out business centric features and functionality.