You mean the "yellow" license plates? Not every car is eligible for tax free purchases. As I understand it the car has to have been originally brought into Amman on a tax free scheme and can then only be sold to other °µÍø½ûÇøs who are eligible for tax free vehicles. I know my firm, as a non operating foreign office (or however they say it), is only eligible for 1 tax free vehicle. Although we can ask for an additional one if needed.