Thank you for the insight.. I might just go with safe and use Enterprise, I hate the counter (upsell upsell etc), but that may be safer in this instance..
For all the security measures that seem to be on CC's these days, especially of the corporate variety you would think they wouldn't be dump as a stick with regards to this. And the agents at VISA/AMEX tend to struggle with this equally as bad.
Back in the day at a lot of local locations like Budget (That was in every little small town everywhere, and all locally operated), many were owned by Car Dealerships, so the merchant account was also in the Dealerships name, so it was charged as XYZ Cars Inc., was hilarious talking to the fraud departments about those ones.
You could just about max the thing out at restaraunts/grocery stores etc, but a pre-auth goes through for a car, god help you if you need to switch to another agency for any reason.