OP, sadly you have been scammed. No doubt the seller needed a quick sale because they are in the military and need to head overseas. They will get ebay motors to handle everything. You would have been told that you could test the car after delivery, and after you'd paid. If you didn't like it, you can return at the seller's expense, and you'll get a full refund.
Will you get a refund? Highly unlikely. However, you can try a money back guarantee dispute, but I don't think they cover cars. Certainly worth trying though.
Edit: If you paid via bank deposit, you have lost your money. I'm so sorry, but you have no chance of getting a refund. If they are in Australia and you paid a significant amount, you could try and claim through the courts, but that could get rather expensive. Always buy cars locally, so you can see if it's what you want.
