We are not holding the GC for them, they didn't want to leave a deposit. It is 50/50 whether we will see them again. They very much wanted the vehicle, but it was unclear when they could make the drive again and if they want to. They did not want to travel with that much cash and didn't want to go to the trouble of getting a cashier's check in case they didn't want the thing or negotiated a different price. Everybody has their own way of doing things and it seems to me that a lot of people don't really know how to conduct business, especially out of town and when it comes to larger than daily outlays of cash.
Now, I am suspicious to whole premise, basically "all the banks were out of cash".
Were you at any point able to verify this yourself directly from the bank?
If not, sounds more like to me the buyers account was the only one "out of cash".