One problem with biofuels is that the amount of land that would be needed to grow enough product would be extremely great. For example, if we look at
ethanol which is produced from corn, 1 acre of land would yeild about 328 gallons of ethanol.
(from
science.howstuffworks.com...)
So for arguments sake, lets say the average vehicle holds 15 gallons of ethanol. That means that this 1 acre of corn would only fill up about 21 cars.
Then the corn needs to be replanted. I don't know how many crops of corn you can get each year, but I think it is just one. So that one acre will
only fill up 21 cars once per year.
I think if someone sat down and did the research (or maybe someone already did on some website) the amount of land needed to supply enough fuel would
be astronomical!
EDITED: for added clarity
[edit on 7/26/2005 by DCFusion]