Man, having your own car there is a total game changer, especially if you are bouncing between cities or just want the freedom to head out for chai without waiting for a cousin to hand over the keys. Bring your passport, a valid US licence, and an IDP is worth having even if not every rental desk asks for it. To browse what is available and rent a car in Pakistan, check the listings on this site
https://getrentacar.com/en-US/pakistan .