Electricity storage | Ne plus ultra | Economist.com
a three-way hybrid, employing a petrol engine and conventional lithium-ion batteries as well as its special capacitors. An overnight charge gives it an all-electric range of 40 miles (60km), after which the petrol engine needs to come into play. AFS Trinity says the vehicle is capable of more than 80mph and returns the equivalent of 150 miles per gallon (more than 60km/litre) in normal use. Edward Furia, the firm’s chief executive, reckons the extra kit would add around $8,700 to the price of a petrol-only vehicle were it put into mass production.
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