Did a quick websearch.
WWW.goldenclassics.com GOLDEN CLASSICS, Clearwater, Florida, USA, Hours: 9 AM to 5 PM Eastern Time
(727) 726-1957,(727) 449-1962,Fax (727) 449-9363
Owner

an Newcomb
I would apprise local law enforcement of the fact that Mr. Newcomb wont ship your car, and inform Mr. Newcomb that you are reporting him to the attorney general in Florida.
Now here is a fact that few seem to know, state law (check Michigan for example) suggests that if you do business on the internet, you effectively are doing business in all 50 states. This is important because it allows you to sue a company in your home state and puts the defendant in a position to have to defend defend.
Tell Mr. Newcomb that you are filing suit in your home state and he will need to incurr the cost to defend, lest he wish you to win a default judgement.
Remind him the cost to defend far exceeds the cost to ship your vehicle. Tell him he has five days to get the vehicle to you or you will sue him in your home state and that you will prosecute the case as it a fairly simple suit.
Go after him relentlessly and agressively. And when you get your way-still do everything you threatened-Rain fury on him such that he will beg you for mercy.
Then light up a victory cigar