The state of Minnesota impounds license plates if a driver is charged with certain crimes, including certain DWIs and driving after cancellation as inimical to public safety (DAC-IPS), when the driver has three or more DWIs (or DAC-IPS). If your license plates have been impounded, it means the plates were removed from your car and destroyed, making it illegal for you or anyone else to drive the vehicle used in the DWI or any other vehicle you own or co-own.