如果你直接google "hertz us driving license requirement"就会看到hertz的网站也是这么说明的,
Rental Terms. An acceptable, valid driver's license issued from your country of residence must be presented at the time of rental. The driver's license must be valid for the entire rental period. ... You will not be allowed to rent a Hertz vehicle with only an International Driver's Permit.
但是google "driving in texas with foreign license"却会有不同的结果,说是IDP是必须的