I bought an unlimited license as part of my effort to buy a car from a used car lot this summer- the effort took a while and after 5 cars CarFax told me I couldn't use the service anymore from VIN numbers, just using license plate numbers - well, that's worthless because there are no license plates at used car lots - maybe this limit was in the fine print, all I know I am a repeat customer of CarFax and feel screwed over - I contacted them and got the runaround and they finally days later gave me a few more VIN number attempts AFTER I had bought a car - so worthless customer service after providing a worthless service - I WILL NEVER use them again