▁Out look . ▁SW K ▁M obil ▁own s ▁an ▁option ▁to ▁buy ▁another ▁ 1 9 ▁tr ams ▁of ▁the ▁same ▁type ▁to ▁replace ▁the ▁last ▁ 1 9 ▁D UE W AG ▁M 8 ▁tr ams . ▁The ▁whole ▁tram ▁fleet ▁will ▁then ▁be ▁bar rier - free . ▁Next ▁to ▁that ▁the ▁city ▁plans ▁to ▁extend ▁the ▁line ▁ 0 4 4 ▁in ▁K ref eld - H ü ls ▁to ▁connect ▁the ▁northern ▁district ▁of ▁H ü ls ▁with ▁the ▁K ref eld ▁dow nt own ▁area . ▁ ▁Econom y ▁ ▁The ▁headquarters ▁of ▁F ress nap f , ▁a ▁pet ▁food ▁ret ail er ▁franch ise ▁company , ▁are ▁situated ▁in ▁K ref eld . ▁ ▁International ▁relations ▁ ▁Since ▁ 1 9 6 4 , ▁the ▁city ▁has ▁hosted ▁an ▁" hon ors ▁program ▁in ▁foreign ▁language ▁( G erman ) ▁studies " ▁for ▁high ▁school ▁students ▁from ▁Indiana , ▁United ▁States . ▁The ▁program ▁ann ually ▁places ▁approximately ▁thirty ▁carefully ▁selected ▁high ▁school ▁juni ors ▁with ▁families ▁in ▁and ▁around ▁K ref eld ▁for ▁int ensive ▁German ▁language ▁training . ▁Since ▁ 1 9 7 3 , ▁the ▁fire ▁services ▁of ▁K ref eld ▁and ▁tw in ▁city ▁Le ic ester ▁have ▁played ▁each ▁other ▁in ▁an ▁annual ▁' friend ly ' ▁football ▁match . ▁ ▁T win ▁towns ▁– ▁Sister ▁cities ▁K ref eld ▁is ▁tw inned ▁with : ▁ ▁Notable ▁n atives ▁Scient ists : ▁ ▁Charlotte ▁A uer bach ▁( 1 8