Algae-based biofuel is a relative unknown with actual potential for future use, as we've said in the past, and biofuel producer Sapphire Energy has unveiled a modified Prius they'll run coast-to-coast on 25 gallons of Algae fuel... sorta.
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Toyota's already got 150 plug-in Prius units in a JDM field trial. We're now told we'll be seeing a plug-in concept later this month at the Frankfurt Motor Show. [Carscoop]
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