第1个回答 2016-06-18
Akindoflittlecarmaysomedaytaketheplaceoftoday'sbigones.Ifpeopledrivesuchcarsinthefuture,therewillbelesspollutionintheair.Therewillbemorespaceforparkingincities.Thestreetswillbelesscrowded.Anddrivingwillbesaferastheselittlecarscangoonly65kmperhour.Thefuturecarswillbefineforgettingroundacity,buttheywillnotbeusefulforlongtrips.Littlecarswillgo200km,beforeneedingtostopformoregas.Ifbigcarsarestillusedalongwiththesmallones,twosetsofroadswillbeneededinthefuture.Someroadswillbeusedforthebigfastcarsandotherroadswillbeneededfortheslowandsmallones.It'ssaidthatthreesuchlittlecarsfitinthespacenowneededforonecartheusualsize.
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