Police vehicles in the United States and Canada are made by several manufacturers and are available in three broad vehicle types:
1. Police Pursuit Vehicles (PPV) are the most common police cars and are equipped to handle the vast majority of tasks including pursuit and high-speed response calls
2. Special Service Vehicles (SSV) and Special Service Package (SSP) are specialized vehicles such as SUVs and sports cars and are generally used for specific tasks but are not recommended by the manufacturer as a pursuit vehicle.
Source Thank you Mike for the email