But if no one is 'burning' petro fuels in 10-20 years in order to cut down polution, who will you sell your oil to at a profit?
Dude petro will still be burned along with algae and others, again it is but a part of what algae can do. I would have you check on the DOE study on algae this is not up for debate it has already proven itself, now it is time to get it produced commercially around the same cost as petro...And that Time has come sir.