Several types of specialty automobile insurances are available to the consumer for automobiles purchased as investments or additions to a hobby collection. Antique cars comprise one of the distinct categories of specialty automobiles. In order to be classified and insured as an antique car, an automobile must be at least twenty-five years old. While antique cars can be insured by traditional car insurance companies, coverage by a company specializing in antique car insurance is recommended.

Typical car insurance policies provide coverage for vehicles depending on their current market value. The Kelley Blue Book value is often used to appraise a vehicle purchased for personal or business use. Antique car insurance, however, is based on an agreement between the antique car owner and the insurance company. This is called an Agreed Value Policy. The owner's proof of purchase, pictures of the antique car's exterior and interior, and knowledge of the supply and demand of the antique car are necessary to determine the policy value.

While standard car insurance policies automatically factor in the vehicle's depreciation each year, antique car insurance polices do not since antique cars usually appreciate in value each year. Once the Agreed Value Policy is in effect, the car's value does not depreciate, and the policy coverage remains the same year to year. The policy coverage can be adjusted at the annual policy renewal.

Some antique car insurance companies impose a limit on the number of miles an antique car can be driven in one year. Since antique cars are ordinarily bought as an investment rather than a personal vehicle, the expectation is that the owners will primarily drive these cars in parades, to car exhibitions, and to special collectible car events. Antique car polices are usually written with mileage limits between 1,000 and 6,000 miles per year. If an antique car insurance company does not restrict yearly mileage, it will usually restrict the owner from driving the car for everyday use, such as transportation to work or shopping.

Antique cars are, in general, more valuable than vehicles purchased for personal use. As a rule, antique car insurance policies require that the owner store the vehicle in a garage or other enclosed and secure storage structure. Some policies include an attendance clause, which states that the owner must be near the vehicle at all times when it is being used, including when it is parked at car shows or other special antique car events.