What do I do if I drive more cars with different permit numbers?titled Customer Service March 05, 2018 13:42 Updated Follow Create an account (with an own email address) for each car/ permit. Related articles What do I do if the recipient isn’t available? I have problems with the app/ technology! What do I do? What is Porterbuddy? Is it safe to use Porterbuddy? How does the Porterbuddy service work? Comments 0 comments Please sign in to leave a comment.