You would find the cost of transporting a car by air would quickly eclipse the value of most cars. We routinely transport large items by air. The last plane we chartered Texas to India pushed $1M.

Given the option of flying a $30,000 car to Europe; you would be better off buying a new car. (Couldn't do it at any price in the cargo holds of a standard passenger cabin, you would need a freighter or a combi).