你會唔會等d hybird 改用ultracapacitor 先至考慮呢?

Ultracapacitor 似乎好個 Li-ION.

Such energy storage has several advantages relative to batteries:
    * Very high rates of charge and discharge.
    * Little degradation over hundreds of thousands of cycles.
    * Good reversibility
    * Low toxicity of materials used.
    * High cycle efficiency (95% or more)

Disadvantages:
    * The amount of energy stored per unit weight is considerably lower than that of an electrochemical battery (3-5 W.h/kg for an ultracapacitor compared to 30-40 W.h/kg for a battery). It is also only about 1/10,000th the volumetric energy density of gasoline.
    * The voltage varies with the energy stored. To effectively store and recover energy requires sophisticated electronic control and switching equipment.
    * Has the highest dielectric absorption of all types of capacitors.

我都同意環保係無價.
但係要渣車既人, 停車息匙, 用少D冷氣.
都可能要教育十幾年.