It depends on the club. Some antique car clubs do in fact require you to have a car if not multiple cars. Others you do not.
Yes there are in fact a few car clubs in SC. One of the best ones in the Myrtle Beach Car Club. They have a big variety of cars.
You can find many car clubs in Port Orange. One of the most popular is Ok Garage Car Club. Their website is www.manta.com/c/mtw3kjg/ok-garage-car-club.
Call your local DMV or one of the local car clubs. I've heard it's only 20 years. (MW San Diego)
Most states require your vehicle to be insured before registering it, but not necessarily "antique insurance." . Antique Auto Insurance usually has stipulations regarding how many miles you can drive and where you can take the car.
There are die cast car collectors association that you can join. You can join the Diecast Car Collectors Club, you can learn more at http://www.diecast.org/diecast98/html/asp/clubs/front.asp.
You need to discuss the type of insurance coverage for your antique car with your insurance provider. Some reputable insurers in Australia are AAMI, Suncorp and Allianz.
Most car clubs would consider a car antique if it is over 45 years old.
modern car
The address of the Antique Car Museum is: 3550 Mahan Dr, Tallahassee, FL 32308
The web address of the Antique Car Museum is: http://www.tacm.com
Whether selling an antique car is a good or bad idea depends on what is important to the seller. The seller has to determine what are the goals of trying to sell an antique car and whether they are worth the trouble.
The phone number of the Antique Car Museum is: 509-779-4204.