I recently booked a car via Hotwire, requesting an economy at IND. The quoted price was $141 for the rental period, and I opted to buy the additional insurance from Allianz. Once the purchase was finalized, it showed that the car was reserved with Thrifty at IND airport. However, when I went to pick up the car after arriving at the airport, the rental agent told me that I was required to pay an additional $90 before they would allow me to drive the car off the lot. They cited a local policy that required the purchase of supplemental liability insurance, since I had booked the car with an international address. (The rental paperwork indicated that the supplemental liability insurance was optional and said nothing about a local franchise having the authority to require it.) Is this allowed by the Hotwire purchase agreement? I understand that sometimes there may be additional fees or taxes, but $90 on a $141 rental is a huge difference! It makes me very hesitant to book with Hotwire again, since I have no idea how much I'm really going to end up paying! After all, it's not like I could refuse to pay the extra since the Hotwire booking can't be canceled, so the $141 was non-refundable. It would have cost much more than $90 to rent a new car elsewhere. In the end, after a long discussion with the management, I managed to get the charge refunded, but only because I happen to be a US citizen with a US driver's license, and both a foreign address and a US address. I suspect that a foreign citizen with no US ties would not have been so lucky.