[Tiggers Pal]

This is from the FAQs on the VTP website if it helps any

What do I need to do if I change rental vehicles?

If you exchange your original rental vehicle for another car at Orlando International Airport the hang tag needs to be properly installed on the arm of the rearview mirror of the newly acquired vehicle. Your license plate information will then be automatically updated as you leave the parking garage. But if you change vehicles elsewhere, you will need to update your account with the new license plate information online using your unique trip link and install the hang tag on the arm of the rearview mirror of the vehicle you are driving on the toll roads. You can also call customer service +1-407-690-5300 7 days a week 8 AM to 12 AM (Midnight) Eastern Standard Time, if you need assistance.

visitortollpass/Faq