In misc.survivalism Ed Huntress wrote:

No one souce is a "long term solution". Not even oil.

Sources I've seen over the past few months, DOE-related, say up to 6% of
motor-fuel consumption could come from biodiesel (others say this would
require an all-out effort); 5% from corn-based ethanol; up to 12% from
cellulosic ethanol.

Every little bit helps.

Exactly. The point is to reduce our dependence on foreign energy. This
is a national security issue.

Objections that no one solution is compete miss the point.


--
A nation of sheep will beget a government of wolves.
--Edward R. Murrow