9 3 9 ▁had ▁been ▁used ▁in ▁Mercur ys ▁and ▁tr uck s , ▁and ▁capable ▁of ▁ 1 0 0   hp ▁( 7 5   k W ) ▁for ▁the ▁first ▁time . ▁ ▁With ▁steel ▁in ▁short ▁supply , ▁Ford ▁produced ▁a ▁distinct ive ▁" S ports man " ▁convert ible ▁with ▁wood ▁side ▁pan els , ▁supplied ▁from ▁the ▁Ford ▁Iron ▁Mountain ▁Plant . ▁The ▁convert ible ▁had ▁an ▁electric ▁top ▁instead ▁of ▁manual ▁one . ▁ ▁In ▁the ▁ 1 9 8 5 ▁film ▁Back ▁to ▁the ▁Future ▁and ▁its ▁sequ el ▁Back ▁to ▁the ▁Future ▁Part ▁II , ▁the ▁car ▁which ▁B iff ▁T ann en ▁own s ▁in ▁ 1 9 5 5 ▁was ▁a ▁black ▁ 1 9 4 6 ▁Ford ▁Super ▁De ▁Lux e ▁convert ible . ▁In ▁B T TF ▁ 1 , ▁during ▁the ▁sk ate board ▁ch ase ▁scene , ▁note ▁carefully ▁the ▁park ▁lights : ▁some ▁sh ots ▁are ▁a ▁ 1 9 4 6 ▁model ▁year , ▁some ▁are ▁a ▁ 1 9 4 7 ▁model ▁year . ▁Looking ▁at ▁the ▁" top ▁boot " ▁area ▁shape , ▁it ▁appears ▁the ▁' 4 7 ▁is ▁a ▁real ▁convert ible ▁and ▁the ▁' 4 6 ▁man ure ▁car ▁is ▁the ▁removed ▁top ▁cou pe . ▁ ▁During ▁production , ▁a ▁black ▁ 1 9 4 6 ▁Ford ▁Super ▁De ▁Lux e ▁cou pe ▁had ▁the ▁top ▁cut ▁off ▁to ▁res emble ▁a ▁convert ible . ▁In ▁B T TF ▁