Today’s cars are smaller, safer, cleaner, and more economical than their predecessors, but the car of the future will be far more pollution-free than those on the road today. Several new types of automobile engines have already been developed than run on alternative sources of power, such as electricity, compressed natural gas, methanol, steam, hydrogen, and propane. Electricity, however, is the only zero-emission option presently available.Although electric vehicles will not be truly practical until a powerful, compact battery or other dependable source of current is available, transport experts foresee a new assortment of electric vehicles entering everyday life: shorter-range commuter electric cars, three-wheeled neighborhood cars, electric delivery vans, bikes and trolleys.The following electrical vehicles are all mentioned in the passage EXCEPTA. a dependable source of electric energy will eventually be developed.B. everyday life will stay much the same in the future.C. a single electric vehicle will eventually replace several modes of transportationD. electric vehicles are not practical for the futureCâu 46: According to the passage, public parking lots of the future will be
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