Now this would truly be going green in color as well as impact!
xman, in you linked article the author poo-poos the idea on cost alone, not a mention of it not being feasible due to energy consumed in producing algae-based fuel.
Costs of anything are variable with time…it may not be cost-effective right now but that doesn’t mean it won’t be in the future.
If he had made a case based on energy consumption, his argument would be something to consider. As it is, he’s all wet (or algae-covered).