▁complement ▁of ▁passengers . ▁From ▁its ▁in ception , ▁the ▁project ▁would ▁use ▁mon oco que ▁construction ▁with ▁a ▁nearly ▁flat ▁floor ▁and ▁a ▁sufficiently ▁high ▁roof ▁to ▁accommod ate ▁u pr ight ▁se ating . ▁ ▁Gi ug iar o ▁and ▁Mant ov ani ▁completed ▁the ▁design ▁for ▁its ▁August ▁ 7 ▁dead line , ▁discover ing ▁only ▁then ▁that ▁Bened etto ▁had ▁left ▁F iat . ▁ ▁Despite ▁Bened etto ' s ▁departure , ▁It ald es ign ▁presented ▁F iat ▁with ▁two ▁full - scale ▁models , ▁four ▁alternative ▁side ▁designs , ▁an ▁interior ▁bu ck ▁or ▁mock up ▁and ▁a ▁compreh ensive ▁study ▁of ▁the ▁P anda ' s ▁competition ▁— ▁as ▁well ▁as ▁a ▁series ▁of ▁temper a ▁render ings ▁by ▁Gi ug iar o . ▁Under ▁the ▁pro tot yp ing ▁design ation ▁Pro get to ▁ 1 4 1 , ▁F iat ▁subsequently ▁commission ed ▁It ald es ign ▁to ▁create ▁production ▁studies , ▁a ▁master ▁model , ▁prov is ional ▁tool ing ▁and ▁pre - production ▁pro tot ypes . ▁Within ▁a ▁year , ▁It ald es ign ▁had ▁made ▁ 2 0 ▁rolling ▁ch ass is . ▁ ▁In ▁February ▁ 1 9 7 8 , ▁F iat ▁test - market ed ▁pro tot ypes ▁to ▁potential ▁customers ▁and ▁deal ers ▁— ▁at ▁an ▁un public ized ▁event ▁in ▁Milan ' s ▁N ove gro ▁Park . ▁On ▁response ▁cards ▁distributed ▁by ▁FI AT ' s ▁sales ▁department , ▁participants ▁g aug ed ▁the