HI
BMW have an interesting approach
"For those that don't believe the range is ample, BMW offers an interesting option. Unlike other automakers, who have kept models strictly electric or strictly hybrid, BMW is hedging its bets with the i3. In addition to the all-electric version, buyers can choose to equip the i3 with a 34-hp 650cc range-extending two-cylinder engine, essentially turning the car into a Volt-like series hybrid. That engine will not power the wheels but will serve strictly as a back-up power reserve, adding range and versatility. BMW says that the range extender, which has a fuel capacity of 2.4 gal, roughly doubles the car's range, which still falls well short of a traditional gasoline car. More important than outright range, however, is the fact that, with the range extender, drivers can refuel at gas stations rather than having to find an electrical charge station. Gas stations are far more readily available than charge stations and also provide quicker refueling."
BMW introduces the i3 electric car with optional range-extending engine
Steve
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