????3.純電動

????純電動車（EV）完全不需要汽油,；它們用電池蓄電來驅(qū)動汽車,。這種車三年前才推向大眾市場，此后大家才開始慢慢接受它,，現(xiàn)在對它的需求則開始日益增長,，下至低端市場中現(xiàn)在售價已降為3萬美元的日產(chǎn)聆風(fēng)（Leaf，見上圖）,，上到出乎意料大受歡迎,、價格高達8萬美元的特斯拉Model S。對續(xù)航里程的擔(dān)心還是阻礙更多消費者購買它的主要原因,，同時大城市外充電站數(shù)量極為有限也是一個很大的障礙,。2013年市場上共有主要廠商生產(chǎn)的11款不同純電動車在售，其中就有梅賽德斯出品的電動版斯瑪特ForTwo（Smart ForTwo）,，它號稱每充一次電的續(xù)航里程達到68英里,，促銷打折前的售價為20,740美元。

????3. Electrics

????Electric vehicles (EVs) run gasoline-free; they use a battery to store the electric energy that powers the motor. Acceptance of pure EVs has been slowly growing since they were introduced to the mass market three years ago, with increased demand both at the low end of the market, following price cuts on the $30,000 Nissan Leaf (above), and at the top with the surprising success of the $80,000 Tesla Model S. Range anxiety continues to be a deterrent to greater buyer interest, as does the limited number of charging stations outside major cities. Eleven different EV models from mainstream manufacturers were on sale in 2013, among them Mercedes's Smart ForTwo Electric, which claims a range of 68 miles per charge and sells for $20,740 before incentives and discounts.