Fuel- Vehicle emissions from burning gasoline and diesel fuels contain toxic pollutants including carbon monoxide, smog-causing volatile organic compounds and nitrogen oxides, sulfur dioxides, formaldehyde and benzene.
Electric- Electric cars have the lowest cost and emissions over time. Traditional gas-powered cars span a range of prices and emissions. Hybrid and plug-in hybrid vehicles are about the same price as traditional cars, but cut emissions roughly in half. Electric cars have the lowest cost and emissions over time.
Seaweed- Seaweed is highly suitable for biofuel. Between 85 and 90% of seaweed is water, which means seaweed is very suitable for biofuel-making methods like anaerobic digestion to make biogas and fermentation to make ethanol. In addition, seaweed doesn't need fresh water or fertilizing.