How can you hide the number plates on the cars with Machine Learning

The reasons why our users want to hide their number plates could be different. We also are motivated to secure the data on our site. It seems natural to create privacy features for our users. One of our privacy features: we've created an anonymous phone number for sellers, e.x., when you sell your car, we create a temporary phone number for you. The callers don't know your real number when you use a temporary phone number which acts as a proxy for incoming calls.