They made us submit all types of information including driving license. After that we had to wait for couple of days for them to review; very manual process. Then we went back and forth on emails for them only to tell us that we should go get a permit from a private company: International Automobile Association Inc that claims to issue International Driving License. Given that it is a "private company", trying to translate the US Government issued driving license and charge for it is basically and money-making scheme. So basically unlike all other Auto rental companies, ecooltra in Lisbon denied accepting US government issued driving license. We rented from another vendor, and didn't have any issues. read more