Basically you use the buffer on the car until the all the compound is removed.

You can check the related link for more details on how to buff a car.

Dual CD Receiver HD/MP3/WMA/iPod/Bluetooth & iTunes Tagging has a great amount of memory buffer.

A car wax buffer is a spongy material that helps in the shining of the car's outside. Orbital, Ryobi, and AutoGeek are popular car wax buffers brands.

A car buffer can be found at any auto supply store such as Autogeek. Buffers may also be found in larger appliance stores such as Sears. Asking around the neighborhood might also lead to being able to borrow one.

There is no buffer for the violation in New Hampshire. If the tags are expired, you can get a ticket.