i think it will be worked out if it is economically feasable early in the picture. there would be a lot of costs before someone here would be able to buy the oil from a crop there.i guess that it will depend upon how much a company here is willing to pay for its feedstock.
i mean the main reaosn that oil comes from the ground and not from the crops is that it was cheaper to pump it up. without thoguht about the environmental problems we see today. who knows maybe in the future this will be factored in. for example one may be able to get carbon credits on new crops seeing as there is a recycling of carbon dioxide in this way.
mankind has grown and propered on relatively cheap oil at a detriment to the environment.

one thing more, if we look at the early days when oil from the ground was cheaper and easier than growing fuel and now we say that fuel prices are going up we may think that these things can compete on a more level field. like if fuel rises by another 20 cents per liter..it will help.
especially in countries where it is cheap enough to grow it still.